Hello everyone.
So yes, apparently there’s other posts that have similar issues.
This is one of them
https://forum.manjaro.org/t/gnome-chromium-chrome-windows-become-blank-after-suspend-when-using-nvidia-graphics/24641/5
I have experienced similar graphical bugs whenever I disable the lockscreen. Ultimately, it seems to end up in being a crash of the Compositor. Further research brought to possibly some loss of VRAM.
This is very similar to a post on the Arch forum:
https://bbs.archlinux.org/viewtopic.php?id=254218
Ultimately, with the Nouveau drivers, everything works fine… Unfortunately I’m in need of those Nvidia deivers.