QT6 apps' edges flicker

This began to happen about a month or so ago. The edges of apps like OBS Studio or Strawberry flicker on one monitor, but not on the other monitor. I’m using multi-monitor (different scalings) Wayland Gnome with fractional scaling and QT_SCALE_FACTOR=1.25 in the environment variable. I tried to attach a screen recording of it, but for some reason, in the screen recording (using Gnome’s in-built screen recording feature), there was no flicker.

Does anyone else have this problem?

some deeper info would help to see where issue could came from: