Python Extension API incorrectly triggers 'remove' event

[DonJayamanne]

On CI we're using a Python global Python env,
In the middle of the tests, the Python extension API triggers and event indicating the python environment has been deleted
and this then causes a few other issues in Jupyter extension

Note: We do not delete the global python env hence I do not expect to receive such and event.
If we're using the event incorrectly please do let us know.

Here are the interesting logs

• Jupyter Logs

2022-11-30T00:05:36.8558283Z verbose 00:05:36.535:  Interpreter removed /opt/hostedtoolcache/Python/3.10.8/x64/bin/python
2022-11-30T00:05:36.8560009Z verbose 00:05:36.535:  Interpreter /opt/hostedtoolcache/Python/3.10.8/x64/bin/python deleted, hence deleting corresponding kernel startUsingPythonInterpreter:'.jvsc74a57bd079f32d02658bf12f8569a265222c57f47d77ad75a8d38a3c9f42a05c99ab6a7e./opt/hostedtoolcache/Python/3.10.8/x64/python./opt/hostedtoolcache/Python/3.10.8/x64/python.-m#ipykernel_launcher
2022-11-30T00:05:36.8562018Z verbose 00:05:36.535:  Local Python connection deleted startUsingPythonInterpreter:'.jvsc74a57bd079f32d02658bf12f8569a265222c57f47d77ad75a8d38a3c9f42a05c99ab6a7e./opt/hostedtoolcache/Python/3.10.8/x64/python./opt/hostedtoolcache/Python/3.10.8/x64/python.-m#ipykernel_launcher: (interpreter id=/opt/hostedtoolcache/Python/3.10.8/x64/bin/python)'
2022-11-30T00:05:36.8568304Z verbose 00:05:36.536:  Updating cache with Local kernels startUsingLocalKernelSpec:'..net-csharp./dotnet./.dotnet#interactive#jupyter#--default-kernel#csharp#{connection_file}#--http-port-range#2048-3000 (interpreter id = undefined)', startUsingLocalKernelSpec:'..net-fsharp./dotnet./.dotnet#interactive#jupyter#--default-kernel#fsharp#{connection_file}#--http-port-range#2048-3000 (interpreter id = undefined)', startUsingLocalKernelSpec:'..net-powershell./dotnet./.dotnet#interactive#jupyter#--default-kernel#powershell#{connection_file}#--http-port-range#2048-3000 (interpreter id = undefined)', startUsingLocalKernelSpec:'.julia-1.5./opt/hostedtoolcache/julia/1.5.2/x64/bin/julia././opt/hostedtoolcache/julia/1.5.2/x64/bin/julia#-i#--color=yes#--project=@.#/home/runner/.julia/packages/ijulia/aqu2h/src/kernel.jl#{connection_file} (interpreter id = undefined)', startUsingLocalKernelSpec:'..venvkernel./home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvkernel/python./home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvkernel/python.-m#ipykernel_launcher (interpreter id = /home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvkernel/bin/python)', startUsingLocalKernelSpec:'..venvnokernel./home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvnokernel/python./home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvnokernel/python.-m#ipykernel_launcher (interpreter id = /home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvnokernel/bin/python)'

& here are the logs from Python extension at the same time

[INFO 2022-10-30 0:5:35.965]: Found interpreter for >> /opt/hostedtoolcache/Python/3.10.8/x64/python /tmp/vscode_jupyter_exts/ms-python.python-2022.19.13321005/pythonFiles/get_output_via_markers.py /tmp/vscode_jupyter_exts/ms-python.python-2022.19.13321005/pythonFiles/interpreterInfo.py <<: {"versionInfo":[3,10,8,"final",0],"sysPrefix":"/opt/hostedtoolcache/Python/3.10.8/x64/.","sysVersion":"3.10.8 (main, Oct 18 2022, 06:43:21) [GCC 9.4.0]","is64Bit":true}
[DEBUG 2022-10-30 0:5:35.968]: No cached env found for /opt/hostedtoolcache/Python/3.10.8/x64/bin/python
[INFO 2022-10-30 0:5:35.970]: Environments added to cache [{"name":"base","location":"/usr/share/miniconda","kind":"virt-conda","executable":{"filename":"/usr/share/miniconda/bin/python","sysPrefix":"/usr/share/miniconda","ctime":1668862752754,"mtime":1668862752754},"display":"Python 3.9.12 ('base')","version":{"major":3,"minor":9,"micro":12,"release":{"level":"final","serial":0},"sysVersion":"3.9.12 (main, Apr  5 2022, 06:56:58) \n[GCC 7.5.0]"},"arch":3,"distro":{"org":"Anaconda, Inc."},"source":[],"type":"Conda","id":"/usr/share/miniconda/bin/python","detailedDisplayName":"Python 3.9.12 ('base': conda)"},{"name":".venvkernel","location":"/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvkernel","kind":"virt-venv","executable":{"filename":"/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvkernel/bin/python","sysPrefix":"/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvkernel","ctime":1669766644084,"mtime":1669766644084},"searchLocation":{"$mid":1,"fsPath":"/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvkernel","path":"/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvkernel","scheme":"file"},"display":"Python 3.10.8 ('.venvkernel': venv)","version":{"major":3,"minor":10,"micro":8,"release":{"level":"final","serial":0},"sysVersion":"3.10.8 (main, Oct 18 2022, 06:43:21) [GCC 9.4.0]"},"arch":3,"distro":{"org":""},"source":[],"type":"Virtual","id":"/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvkernel/bin/python","detailedDisplayName":"Python 3.10.8 ('.venvkernel': venv)"},{"name":".venvnokernel","location":"/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvnokernel","kind":"virt-venv","executable":{"filename":"/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvnokernel/bin/python","sysPrefix":"/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvnokernel","ctime":1669766672094,"mtime":1669766672094},"searchLocation":{"$mid":1,"fsPath":"/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvnokernel","path":"/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvnokernel","scheme":"file"},"display":"Python 3.10.8 ('.venvnokernel': venv)","version":{"major":3,"minor":10,"micro":8,"release":{"level":"final","serial":0},"sysVersion":"3.10.8 (main, Oct 18 2022, 06:43:21) [GCC 9.4.0]"},"arch":3,"distro":{"org":""},"source":[],"type":"Virtual","id":"/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvnokernel/bin/python","detailedDisplayName":"Python 3.10.8 ('.venvnokernel': venv)"},{"name":".venvnoreg","location":"/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvnoreg","kind":"virt-venv","executable":{"filename":"/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvnoreg/bin/python","sysPrefix":"/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvnoreg","ctime":1669766640228,"mtime":1669766640228},"searchLocation":{"$mid":1,"fsPath":"/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvnoreg","path":"/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvnoreg","scheme":"file"},"display":"Python 3.10.8 ('.venvnoreg': venv)","version":{"major":3,"minor":10,"micro":8,"release":{"level":"final","serial":0},"sysVersion":"3.10.8 (main, Oct 18 2022, 06:43:21) [GCC 9.4.0]"},"arch":3,"distro":{"org":""},"source":[],"type":"Virtual","id":"/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvnoreg/bin/python","detailedDisplayName":"Python 3.10.8 ('.venvnoreg': venv)"},{"name":"","location":"","kind":"global-other","executable":{"filename":"/bin/python","sysPrefix":"/usr","ctime":1668861006324,"mtime":1586947544000},"display":"Python 3.8.10 64-bit","version":{"major":3,"minor":8,"micro":10,"release":{"level":"final","serial":0},"sysVersion":"3.8.10 (default, Jun 22 2022, 20:18:18) \n[GCC 9.4.0]"},"arch":3,"distro":{"org":""},"source":["path env var"],"id":"/bin/python","detailedDisplayName":"Python 3.8.10 64-bit"},{"name":"","location":"","kind":"global-other","executable":{"filename":"/bin/python2","sysPrefix":"/usr","ctime":1668860991299,"mtime":1584102683000},"display":"Python 2.7.18 64-bit","version":{"major":2,"minor":7,"micro":18,"release":{"level":"final","serial":0},"sysVersion":"2.7.18 (default, Jul  1 2022, 12:27:04) \n[GCC 9.4.0]"},"arch":3,"distro":{"org":""},"source":["path env var"],"id":"/bin/python2","detailedDisplayName":"Python 2.7.18 64-bit"},{"name":"","location":"","kind":"global-other","executable":{"filename":"/usr/bin/python","sysPrefix":"/usr","ctime":1668861006324,"mtime":1586947544000},"display":"Python 3.8.10 64-bit","version":{"major":3,"minor":8,"micro":10,"release":{"level":"final","serial":0},"sysVersion":"3.8.10 (default, Jun 22 2022, 20:18:18) \n[GCC 9.4.0]"},"arch":3,"distro":{"org":""},"source":["path env var"],"id":"/usr/bin/python","detailedDisplayName":"Python 3.8.10 64-bit"},{"name":"","location":"","kind":"global-other","executable":{"filename":"/opt/hostedtoolcache/Python/3.10.8/x64/python","sysPrefix":"/opt/hostedtoolcache/Python/3.10.8/x64/.","ctime":1669766020363,"mtime":1668865149931},"display":"Python 3.10.8 64-bit","version":{"major":3,"minor":10,"micro":8,"release":{"level":"final","serial":0},"sysVersion":"3.10.8 (main, Oct 18 2022, 06:43:21) [GCC 9.4.0]"},"arch":3,"distro":{"org":""},"source":["path env var"],"id":"/opt/hostedtoolcache/Python/3.10.8/x64/python","detailedDisplayName":"Python 3.10.8 64-bit"}]
[INFO 2022-10-30 0:5:35.971]: [
  'Display locator refreshing progress, Class name = f, completed in 0ms, has a falsy return value, , Return Value: undefined'
]
[INFO 2022-10-30 0:5:35.973]: [
  'Hide locator refreshing progress, Class name = f, completed in 0ms, has a falsy return value, , Return Value: undefined'
]
[DEBUG 2022-10-30 0:5:35.975]: Cached data exists KeyPrefix=Cache_Method_Output_m.addKeyToStorage-Args="workspace"-Arg-Separator-"autoSelectedWorkspacePythonInterpreter-/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience"-Arg-Separator-undefined
[DEBUG 2022-10-30 0:5:35.976]: Cached data exists KeyPrefix=Cache_Method_Output_m.addKeyToStorage-Args="global"-Arg-Separator-"WORKSPACE_FOLDER_INTERPRETER_PATH_/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience"-Arg-Separator-undefined
[DEBUG 2022-10-30 0:5:35.976]: Cached data exists KeyPrefix=Cache_Method_Output_m.addKeyToStorage-Args="global"-Arg-Separator-"WORKSPACE_FOLDER_INTERPRETER_PATH_/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience"-Arg-Separator-undefined
[DEBUG 2022-10-30 0:5:35.978]: Cached data exists KeyPrefix=Cache_Method_Output_m.addKeyToStorage-Args="global"-Arg-Separator-"WORKSPACE_FOLDER_INTERPRETER_PATH_/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience"-Arg-Separator-undefined
[DEBUG 2022-10-30 0:5:35.978]: Cached data exists KeyPrefix=Cache_Method_Output_m.addKeyToStorage-Args="global"-Arg-Separator-"WORKSPACE_FOLDER_INTERPRETER_PATH_/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience"-Arg-Separator-undefined
[DEBUG 2022-10-30 0:5:35.996]: Cached data exists KeyPrefix=Cache_Method_Output_m.addKeyToStorage-Args="global"-Arg-Separator-"WORKSPACE_FOLDER_INTERPRETER_PATH_/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience"-Arg-Separator-undefined
[DEBUG 2022-10-30 0:5:35.996]: Cached data exists KeyPrefix=Cache_Method_Output_m.addKeyToStorage-Args="global"-Arg-Separator-"WORKSPACE_FOLDER_INTERPRETER_PATH_/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience"-Arg-Separator-undefined
[DEBUG 2022-10-30 0:5:36.7]: Searching for conda environments using conda
[DEBUG 2022-10-30 0:5:36.7]: Cached data exists KeyPrefix=Cache_Method_Output_y.getEnvList-Args=
[DEBUG 2022-10-30 0:5:36.18]: Looking into conda env for executable: {"prefix":"/usr/share/miniconda","name":"base"}
[DEBUG 2022-10-30 0:5:36.34]: Searching for workspace virtual envs in: /home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience
[DEBUG 2022-10-30 0:5:36.35]: Found executable within conda env {"prefix":"/usr/share/miniconda","name":"base"}
[DEBUG 2022-10-30 0:5:36.35]: Found conda executable: /usr/share/miniconda/bin/python
[DEBUG 2022-10-30 0:5:36.59]: Workspace Virtual Environment: [added] /home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvkernel/bin/python
[DEBUG 2022-10-30 0:5:36.59]: Workspace Virtual Environment: [skipped] /home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvkernel/bin/python3
[DEBUG 2022-10-30 0:5:36.59]: Workspace Virtual Environment: [skipped] /home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvkernel/bin/python3.10
[DEBUG 2022-10-30 0:5:36.59]: No cached env found for /opt/hostedtoolcache/Python/3.10.8/x64/bin/python
[DEBUG 2022-10-30 0:5:36.59]: No cached env found for /opt/hostedtoolcache/Python/3.10.8/x64/bin/python
[DEBUG 2022-10-30 0:5:36.59]: No cached env found for /opt/hostedtoolcache/Python/3.10.8/x64/bin/python
[DEBUG 2022-10-30 0:5:36.59]: No cached env found for /opt/hostedtoolcache/Python/3.10.8/x64/bin/python
[DEBUG 2022-10-30 0:5:36.59]: No cached env found for /opt/hostedtoolcache/Python/3.10.8/x64/bin/python
[INFO 2022-10-30 0:5:36.60]: Found: /bin/python --> /bin/python3.8
[INFO 2022-10-30 0:5:36.60]: Found: /bin/python2 --> /bin/python2.7
[INFO 2022-10-30 0:5:36.61]: Found: /bin/python2.7 --> /bin/python2.7
[INFO 2022-10-30 0:5:36.71]: Found: /bin/python3 --> /bin/python3.8
[DEBUG 2022-10-30 0:5:36.71]: Workspace Virtual Environment: [added] /home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvnokernel/bin/python
[DEBUG 2022-10-30 0:5:36.71]: Workspace Virtual Environment: [skipped] /home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvnokernel/bin/python3
[DEBUG 2022-10-30 0:5:36.71]: Workspace Virtual Environment: [skipped] /home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvnokernel/bin/python3.10
[INFO 2022-10-30 0:5:36.76]: Found: /bin/python3.8 --> /bin/python3.8

[DonJayamanne]

Job https://github.com/microsoft/vscode-jupyter/actions/runs/3579027060
VS Code logs (with Pythono output) https://github.com/microsoft/vscode-jupyter/suites/9575009837/artifacts/456041143
Jupyter logs can be found here https://github.com/microsoft/vscode-jupyter/actions/runs/3579027060/jobs/6019778068

I'm uploading the two logs here separately

• Python Python.log.zip
• Jupyter jupyterlogs.txt.zip

[DonJayamanne]

Running into this very often,
we get an event for remoted and immediate after an event for added
Sometimes it takes longer to get the added

2022-12-07T20:24:35.0606788Z verbose 20:24:35.059:  Python API env change detected, add => 'C:\HOSTEDTOOLCACHE\WINDOWS\PYTHON\3.9.13\X64\PYTHON.EXE}'
2022-12-07T20:24:35.0618910Z verbose 20:24:35.060:  Python API env change detected, remove => 'C:\HOSTEDTOOLCACHE\WINDOWS\PYTHON\3.9.13\X64\PYTHON.EXE}'

[DonJayamanne]

Still running into this on CI

2022-12-21T18:36:48.9794627Z verbose 18:36:48.529:  Python API env change detected, update => '/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience/.venvnoreg/bin/python}'
2022-12-21T18:36:49.0029418Z verbose 18:36:48.534:  Rank Kernels, Class name = KernelRankingHelper, completed in 23ms, has a truthy return value, Arg 1: "Untitled-1.ipynb", Arg 2: "", Arg 3: {"orig_nbformat":4,"language_info":{"name":"python"}}, Arg 4: <Uri:/opt/hostedtoolcache/Python/3.10.9/x64/bin/python>, Arg 5: "", Arg 6: undefined
2022-12-21T18:36:49.0128460Z verbose 18:36:48.567:  Python API env change detected, update => '/bin/python}'
2022-12-21T18:36:49.0238166Z verbose 18:36:48.583:  Python API env change detected, add => '/usr/bin/python}'
2022-12-21T18:36:49.0245214Z verbose 18:36:48.621:  No controller, hence notebook communications cannot be initialized for editor Untitled-1.ipynb
2022-12-21T18:36:49.0507862Z info 18:36:48.631:  getRemoteUri: local
2022-12-21T18:36:49.0519623Z verbose 18:36:48.643:  Python API env change detected, add => '/opt/hostedtoolcache/Python/3.10.9/x64/python}'
2022-12-21T18:36:49.0698444Z verbose 18:36:48.764:  Python API env change detected, update => '/usr/bin/python}'
2022-12-21T18:36:49.0765408Z verbose 18:36:48.888:  Python API env change detected, update => '/opt/hostedtoolcache/Python/3.10.9/x64/python}'
2022-12-21T18:36:49.0842667Z verbose 18:36:48.890:  Python API env change detected, remove => '/opt/hostedtoolcache/Python/3.10.9/x64/bin/python}'
2022-12-21T18:36:49.0941313Z verbose 18:36:48.940:  Refreshed Environments
2022-12-21T18:36:49.1388804Z verbose 18:36:48.940:  Refreshed Environments
2022-12-21T18:36:49.1389826Z info 18:36:48.940:  Fetching TargetController document Untitled-1.ipynb cancelled.
2022-12-21T18:36:49.1443254Z verbose 18:36:48.941:  Compute Preferred Controller, Class name = ControllerPreferredService, completed in 521ms, has a truthy return value, Arg 1: <Uri:Untitled-1.ipynb>, Arg 2: undefined, Arg 3: {"a":true,"b":null}, Return Value: {}
2022-12-21T18:36:49.1988309Z No need to update Interpreter path, as it is /opt/hostedtoolcache/Python/3.10.9/x64/bin/python in workspace
2022-12-21T18:36:49.3727989Z verbose 18:36:49.107:  Python API env change detected, add => '/opt/hostedtoolcache/Python/3.10.9/x64/bin/python}'
2022-12-21T18:36:49.4227431Z No need to update Interpreter path, as it is /opt/hostedtoolcache/Python/3.10.9/x64/bin/python in workspace
2022-12-21T18:36:49.4228954Z verbose 18:36:49.197:  Get Active Interpreter, Class name = InterpreterService (started execution), Arg 1: "Untitled-1.ipynb"
2022-12-21T18:36:49.4238902Z info 18:36:49.198:  Active Environment Path for /home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience is {"id":"/opt/hostedtoolcache/Python/3.10.9/x64/bin/python","path":"/opt/hostedtoolcache/Python/3.10.9/x64/bin/python"}
2022-12-21T18:36:49.4248549Z info 18:36:49.205:  Resolved Active Environment for /home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience is {"internal":{"path":"/opt/hostedtoolcache/Python/3.10.9/x64/bin/python","id":"/opt/hostedtoolcache/Python/3.10.9/x64/bin/python","executable":{"uri":{"$mid":1,"path":"/opt/hostedtoolcache/Python/3.10.9/x64/bin/python","scheme":"file"},"bitness":"64-bit","sysPrefix":"/opt/hostedtoolcache/Python/3.10.9/x64"},"version":{"major":3,"minor":10,"micro":9,"release":{"level":"final","serial":0},"sysVersion":"3.10.9 (main, Dec  7 2022, 08:16:13) [GCC 11.3.0]"},"tools":[]},"id":"/opt/hostedtoolcache/Python/3.10.9/x64/bin/python"}
2022-12-21T18:36:49.4261623Z info 18:36:49.209:  Active Interpreter in Python API for resource '/home/runner/work/vscode-jupyter/vscode-jupyter/src/test/datascience' is /opt/hostedtoolcache/Python/3.10.9/x64/bin/python, EnvType: Unknown, EnvName: '', Version: 3.10.9 (main, Dec  7 2022, 08:16:13) [GCC 11.3.0]
2022-12-21T18:36:49.4265231Z verbose 18:36:49.209:  Get Active Interpreter, Class name = InterpreterService, completed in 13ms, has a truthy return value, Arg 1: "Untitled-1.ipynb", Return Value: {"id":"/opt/hostedtoolcache/Python/3.10.9/x64/bin/python","sysPrefix":"/opt/hostedtoolcache/Python/3.10.9/x64","displayPath":{"$mid":1,"path":"/opt/hostedtoolcache/Python/3.10.9/x64/bin/python","scheme":"file"},"envName":"","uri":{"$mid":1,"fsPath":"/opt/hostedtoolcache/Python/3.10.9/x64/bin/python","path":"/opt/hostedtoolcache/Python/3.10.9/x64/bin/python","scheme":"file"},"displayName":"","envType":"Unknown","version":{"major":3,"minor":10,"patch":9,"raw":"3.10.9 (main, Dec  7 2022, 08:16:13) [GCC 11.3.0]"}}
2022-12-21T18:36:49.4323059Z verbose 18:36:49.281:  Python API env change detected, remove => '/opt/hostedtoolcache/Python/3.10.9/x64/bin/python}'
2022-12-21T18:36:49.4349365Z verbose 18:36:49.297:  Full interpreter list after refreshing (total 15ms, resolve 2ms, refresh 13ms) is length: 7, 

This is most likely the cause of the bug that users are also running into microsoft/vscode-jupyter#11747

@karrtikr do you have an update on this bug, we're running into this issue very often on CI and I believe our users too are running into this issue on the stable release and having issues running code in notebooks.

[karrtikr]

I'll try to have a look today. Meanwhile you can work around this issue at Jupyter's end by selectively ignoring remove events if resolveEnvironment API for the event does not return undefined.

[karrtikr]

I have created a PR #20424 which should hopefully take care of this, leaving this open so you can verify. Happy holidays!