KDE thinks the app is unresponsive

[etam]

Observed behaviour

Just after starting the game, KDE shows on the game window title "(Unresponsive)" and adds a grayscale image filter. I can interact with the game with mouse and keyboard, it doesn't go away.

Expected behaviour

It should not.

Steps to reproduce

1. Start the game

Workaround

Do anything to change the focus out of the game window for a moment. Alt+tab or alt+F2 (to open krunner) or meta (to open start menu) and go back to the game.

My pioneer version: 20250203
OS: openSUSE Tumbleweed
Plasma desktop: 6.2.5 in wayland mode
export: SDL_VIDEODRIVER=wayland