[postcert]

I've been having a similar flakiness with plasma on Nixos (proprietary + 3070 as well). Sadly can't say whether it did{n't} happen on another distro as I last used Arch around the v535 driver.

I found it funny how silently it would fail at times. After coming out of a game or focusing on something I'd scratch my head as to where did the docks/background went. I'd say you're lucky in that it recovered itself, generally I needed to run `plasmashell` in the alt+f2 run prompt.