I had a similar issue, only that it also applied to ssh for me.
can you try to edit /etc/nsswitch.conf to have group: compat nis (instead of just "group: compat")
and check if you have in /etc/group a line containing +:::
I had a similar issue, only that it also applied to ssh for me.
can you try to edit /etc/nsswitch.conf
to have
group: compat nis
(instead of just "group: compat")
and check if you have in /etc/group a line containing
+:::