(In reply to tempel.julian from comment #65)
> Since this commit, the modesetting driver shows the same behavior as
> xf86-video-amdgpu:
> https://gitlab.freedesktop.org/xorg/xserver/commit/
> f0d78b47ac49977a6007f5fe081f00c6eb19a12e

Hmm, could the property update be part of the legacy => atomic compatibility
code in the kernel?

> So, now only xwayland isn't affected. But I think this can very well be just
> because Wayland compositors yet don't support turning compositing off in
> fullscreen.

They still use page flipping though, similar to TearFree. Which Wayland
compositor(s) have you tried?