Comment 1 for bug 1998169

Initial analysis seems to indicate that this is happening due to a patch added in the last update which is related to this commit:

https://github.com/shadow-maint/shadow/commit/f3bdb28e57e5e38c1e89347976c7d61a181eec32

Checking the manual for fchmodat in focal, it is possible to see the following:

AT_SYMLINK_NOFOLLOW
       If pathname is a symbolic link, do not dereference it: instead operate on the link itself. This flag is not currently implemented.

The flags seems to not be currently implemented.

No further changes to the code have been made by upstream.

More investigation will be made and the last update will possibly be reverted.