RawTherapee application menu only shown once

[melentye]

• Sway Version: 1.2
• Debug Log: https://gist.github.com/melentye/2fc2c9ddcc80b2ef96f1639bfaf33a61
• Configuration File: https://gist.github.com/melentye/f019b3918f0bca9da0a03273e6734981

Steps to reproduce:

1. Use RawTherapee to open a RAW file: rawtherapee /path/to/file.arw - feel free to use this for testing if you don't have a RAW file lying around: https://www.dropbox.com/s/ccqmjpkr6q3z027/DSC05735.ARW?dl=0
2. Once in the editor mode, use "Processing Profiles" drop-down menu on the top-right and check out "Bundled profiles". There should be a few options, some of them nested.
3. Close the menu by clicking anywhere.
4. Use the same "Processing Profiles" drop-down menu again and notice that "Bundled profiles" cannot be viewed anymore, neither hovering the option nor clicking works.

The debug log should capture that, except I've opened a picture from within the app.

The expected result, obviously, is that the menu can be used again without restarting the application.

Random notes:

• The issue doesn't occur when RawTherapee is started with GDK_BACKEND=x11
• https://github.com/Beep6581/RawTherapee/issues/3967 mentions the same issue running GNOME on Wayland, but Weston, reportedly, doesn't suffer from it.

[Z3NOX]

Same here. Thank you for the "random note" of using GDK_BACKEND=x11, though. So I can still use RawTherapee under sway.

[ror6ax]

Is there a specific bug in GTK+/Wayland this is linked to?