KNIME Crashes on wayland with GDK_BACKEND=x11 on Kubuntu 25.04

Hello

I am unfortunately experiencing crashes on knime 5.5.1 as well as 5.4.5 (+ a few prior versions too). Crashes always occur when opening a dialog box, specifically I can always reproduce the crash when going to settings->databases-> “add” button.

Curiously, when I run the 5.5.1 version on wayland (without the x11 backend variable) the crashes do not occur , but I do get blank dialog boxes which make the app unusable sadly.

Error logs suggest issues with libgdk-3 :

"# Problematic frame:

C [libgdk-3.so.0+0x525d5] gdkwindowget_screen+0x25"

knime 5.5.1 hs_err_pid6609.log

knime 5.4.5 hs_err_pid5535.log

I was also able to reproduce the same error on a different machine so it’s not a hardware issue (as was suggested in one of the forum topics I found on knime crashing)

Other things I’ve tried :

-swtiching from wayland to an x11 session (still crahsed)

-running on a xorg-native distribution (ubuntu cinamon 25.04) - did not crash but there are weird scaling issues on the classic UI

Is there any workaround/pending fix that would allow me to continue using KNIME on KDE?

Thank you!

Adam