Subwindows and menus broken on Ubuntu 22.04?

[makishi]

I had a simple application with a QMainWindow that had a QAction and a menuBar. This worked great on Ubuntu 20.04 (Focal Fossa). I could press the "Menu" label and see the QActions I had added.

After installing Ubuntu 22.04 (Jammy Jellyfish) I can still see the "Manu" label, but nothing happens when I press it. The QAction does still work though! (Ctrl+Q). I also don't seem to be able to show sub-windows, calling a new QMainWindow with a button, for example.

Does anyone know why or has anyone also experienced this? Maybe Qt is fine but there's something with window popups, idk.
Thanks in advance.

[makishi]

Solved the window problem!
I was just missing a self when declaring it. Now it does show. Still nothing on the menu though.

[SGaist]

Hi and welcome to devnet,

It would help if you can provide a minimal runable script that shows that behaviour.

[makishi]

I've found out it's just a problem with the second monitor. It works fine on my laptop, but the position of the menu popups is off on the bigger monitor.

This is enough of a solution for me, so I'm marking as solved :)