SUMMARY
I'm on Arch, running Plasma 5.22.1, KDE frameworks 5.83.0, qt version 5.12.2, only Intel on Wayland. I use a option on my kwinrc that hides decorations when you maximize the window, after you put in in your config file and reboot it does it only the first time on the window that is maximized. What happens? The first window that you maximize it you can't use your mouse, it hides the title bar as it should and it still plays audio or use your keyboard but it does not let you use your mouse.

STEPS TO REPRODUCE
1. Add BorderlessMaximizedWindows=true
2. Reboot
3. Open anything like a browser or dolphin (it does not happen on konsole tho)
4. Maximize a window (It will not let you use your mouse, it's like it doesn't exists)
5. Open another instance of the same app tho make it stop and make it work as it should again

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION