Hi GalĂ, Simon I observed this issue as well and have bisected it.
https://salsa.debian.org/gnome-team/mutter/-/commit/209b1ba3 209b1ba383f59e1b398d3331d9fd9fcb7f0284a1 seems to be the culprit Anything before that commit functions properly on my aarch64 machine. PS. sorry for the resend-- forgot to include the mailing list - Hal