I had the same redirect loop problem with my groups and just figured out how to fix it. I had downloaded a bp-custom.php to my plugins folder to force view of the group to user’s profile instead of activities. Removing this fixed the problem for me.
It seems to be a problem with the theme I am using. Any idea where I should look for issues? Basically clicking on the tabs for these pages won’t work as normal. I’ve tried adjusting the index.php inside /groups/ but didn’t seem to help…
I usually see a loading icon when I switch between All Groups and My Groups on other BP sites, this doesn’t happen on mine and it simply goes to a different page…