Managed to fix it, but learned to be careful - what might be critical for one model might be bloat for another.
Here's a writeup about packages which are safe to remove in MIUI: https://wooptoo.com/blog/safe-to-remove-packages-miui/
This is from a few years ago but it should still apply today.
https://github.com/Universal-Debloater-Alliance/universal-an...
I'll try to reproduce if I get time.
Managed to fix it, but learned to be careful - what might be critical for one model might be bloat for another.