The status screen in mod_feedback simply checks to see if there are any
attempts in progress to return the user status. This check should be
limited to only include instances of the current feedback activity not
any feedback activity on the site.
There is one point where it restricted the list of users. I have
fixed this and also altered the (only) script that calls that function
so that it obtains a cm_info $cm rather than the old sort.
There were previously no Behat tests at all in this module. In order
to be confident that I didn't break it, I have implemented a Behat
test (which should also be useful in general as it does go through
other pages on the way to get to the relevant one).