^ Color banding was fixed.
Gave Plasma Wayland on NVidia blob another go yesterday with the release of Firefox 75b1. Still need to use MOZ_ENABLE_WAYLAND=1 but it works now... tabs repaint properly, YouTube no longer crashes, browsing in general is functional. Had some invisible browser menus.
Was more surprised that XWayland started working partially. xglgears, xglinfo, nvidia-smi all worked. Bigger opengl benchmarks like Heaven and valley just render a black screen for now, but they run normally otherwise. None of the vulkan demos are working yet.
Occassionaly Plasma crashes when interacting with client windows. I use a heavily customized desktop configuration (KVantum engine with transparent blurs), which likely causes the instability. Gonna try a new default user profile and see if it's any more stable.
Overall fairly exciting progress for the blob, but still nowhere as usable as AMD open source driver though. Hoping for GBM succesor to change this situation for the blob this year. The fact that most AI toolkits are native to Linux is probably revitalizing NVidia's attention back to it now.