3D View widget causing artifacts and not handling events

[unmais]

Describe the Bug
3D View causing visual artifacts and failing to handle events (keystrokes, focus).

Steps to Reproduce

1. Open any world
2. See black rectangle artifact and impossibility of using keystrokes for instructing the view

Expected behavior
Normal behavior.

Screenshots
See attached.

System
System: Linux 6.17.0-35-generic x86_64
Kubuntu 24.04 (Plasma 5)
Processor: AMD Ryzen 7 4800H with Radeon Graphics
Number of cores: 16
OpenAL device: OpenAL Soft
OpenGL vendor: AMD
OpenGL renderer: AMD Radeon Graphics (radeonsi, renoir, ACO, DRM 3.64, 6.17.0-35-generic)
OpenGL version: 4.6 (Compatibility Profile) Mesa 25.2.8-0ubuntu0.24.04.1

Additional context
This happens on every single world I tried. I tried software rending and safe mode - all the same.

[unmais]

A workaround that made the trick for me: turning off fractional scaling on Plasma.

[CoolSpy3]

Hello, we just merged a patch that should fix this! Please try it out in the latest nightly build and let us know if it fixes your problem! (Note: Make sure you download one of the R2025a builds; not R2025b, as this has not yet been merged to develop.)