From a quick look at the logs I'd suspect
sha1sum: /var/lib/snapd/lib/gl/libGL.so.1: Permission denied
as the bit responsible for the hang & etc, especially if you've seen similar hangs from failing hooks.
I can't say I have seen that though.
Does changing your internet settings change GL settings? (wat)
From a quick look at the logs I'd suspect
sha1sum: /var/lib/ snapd/lib/ gl/libGL. so.1: Permission denied
as the bit responsible for the hang & etc, especially if you've seen similar hangs from failing hooks.
I can't say I have seen that though.
Does changing your internet settings change GL settings? (wat)