Official GrapheneOS account on Matrix:
9th gen release has been taken out of Alpha for now
we have no idea what's causing the issue beyond it being mmap-related calls stalling mainly when doing GPU-related work for the Mali GPU driver
it may take a long time to resolve the issue
appears to be no issue for anything other than 9th gen so we'll likely put it in Beta for the other devices soon
we'll need a new release to fix whatever is wrong for 9th gen but we don't know what it is and it may be very hard to resolve