Assigning child device to device bay doesn't return to device bay listing

[candlerb]

NetBox version

v3.1.4

Python version

3.8

Steps to Reproduce

1. Create a parent device with device bays in a given rack
2. Create one or more child devices in the same rack
3. Go to the parent device listing, device bays tab, e.g. /dcim/devices/1031/device-bays/
4. Click on "+" next to one of the bays. This takes you to e.g. /dcim/device-bays/110/populate/?return_url=/dcim/devices/1031/device-bays/
5. Select one of the child devices created in step (2)
6. Click Save

Expected Behavior

After adding to device bay, you should return to device bay listing at /dcim/devices/1031/device-bays/ (as is correctly implied by the return_url parameter)

Observed Behavior

You return to the main device page at /dcim/devices/1031/ instead. The return_url is ignored.