When doing anything related to UI Design (launching Qt Designer or the UI edit in Qt Creator), Qt Creator/Designer will crash at random. Sometimes I can go 10-15 minutes without a crash, but occasionally the first action I take after launching results in a crash. Nothing appears on the console, just a SIGSEGV.

This seems to happen whenever any kind of action is taken; editing a property, moving a widget, breaking/forming a layout, adding a widget, removing a widget, closing the UI editor, pretty much anything can cause it to crash.

Backtrace is attached. I will try to run a debug build of Creator but I'm not sure I have the capability to at the moment.

Occurs regardless of X11, Wayland, root or not.

Interestingly, this has only happened so far on KDE Plasma 5. I've never seen it happen on sway.