Unhandled event loop exception

[oervald]

Trying to use "Show Tooltip Description".

eclipse.buildId=4.36.0.20250605-1300
java.version=23.0.1
java.vendor=Eclipse Adoptium
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_US
Framework arguments:  -product org.eclipse.epp.package.java.product
Command-line arguments:  -os win32 -ws win32 -arch x86_64 -product org.eclipse.epp.package.java.product

org.eclipse.ui
Error
Tue Jun 24 11:03:01 CEST 2025
Unhandled event loop exception

java.lang.IllegalArgumentException: Argument not valid Edge instance with same data folder but different environment options already exists
	at org.eclipse.swt.SWT.error(SWT.java:4926)
	at org.eclipse.swt.browser.Edge.lambda$16(Edge.java:667)
	at org.eclipse.swt.browser.Edge.lambda$5(Edge.java:240)
	at org.eclipse.swt.internal.win32.OS.DispatchMessage(Native Method)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3722)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1151)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1042)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153)
	at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:678)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:583)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:173)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:185)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:219)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:149)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:115)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:467)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:298)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:627)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:575)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1431)

[sratz]

I am not really sure what's happening here.

@oervald: Could you do the following?

• set
  -Dorg.eclipse.swt.browser.EdgeArgs=--enable-logging --v=1 --log-file=c:\some\directory\webview2.log
  e.g. by appending it to eclipse.ini (pick an existing directory of your choice instead of c:\some\directory\).
• restart and reproduce the issue
• provide the webview2.log file

[oervald]

@sratz
Can't get it to write to the log file and yes I did edit the path to another directory :).
But I do get this popup from msedgewebview2.exe
Also after catching this. It seems like it works again as long as the window from the msedgewebview2.exe is open.

[0624/131119.382:ERROR:base\win\win_util.cc:1600] failed to set WebView dpi awareness of 2: The operation completed successfully. (0x0)

[sratz]

@sratz Can't get it to write to the log file and yes I did edit the path to another directory :).

Hmm, strange.

But I do get this popup from msedgewebview2.exe Also after catching this. It seems like it works again as long as the window from the msedgewebview2.exe is open.

[0624/131119.382:ERROR:base\win\win_util.cc:1600] failed to set WebView dpi awareness of 2: The operation completed successfully. (0x0)

I get the same error message on my machine and Edge works. Not sure what this error message is supposed to tell us (ERROR, but return code SUCCESS (0x0) does not make much sense to me).

The part about DPI awareness is interesting, though.

Do you have multiple monitors with different DPI? Does it make a difference on which monitor you start Eclipse and then use a web control for the first time?