This happens to me sometimes when I eanter a lag intensive area or open the map. Lately its been happening a lot at heathrow and its really annoying.
This happens after opening the map but sometimes all the ui just dissappears.
Device: Samsung a12 64gb
Operating system: android 12, one ui core 4.1
Edit : now its not just at lag intensive areas its happening at areas where i have alright fps usually 15 to 20 fps (not great but i manage) whixh it never used to before