I am (trying to) run the latest
LibreELEC-RPi5.aarch64-12.0.0.img
on Raspberry Pi5.
There appears to be a problem if one has a USB memory stick (with video contents) connected to one of the USB ports.
If starting up the system without external USB everything boots fine.
If starting WITH USB stick attached the screen fills with errors (crash).
If entering the USB stick after having booted, then the screen tends to freeze (after a while) and the system becomes unresponsive.
No video contents on the USB stick appears available.
If entering the USB stick after having booted, and then shutting down (from the Kodi front-end screen symbol) she screen fills up with errors (crash).
The USB stick is tested on a Windows machine and appears to be working fine.