Wrong redirect for “Ultimate Member Profile Tabs Pro”

I have Ultimate Member and “Ultimate Member Profile Tabs” along wtih “Ultimate Member – Tabs Pro” installed and all seems to work fine except for one critical use case:
1. I’ve created a few tabs and a few forms that are successfully shown in those tabs.
2. When I log-in as a regular user, all works – I can switch between the tabs just fine.
3. However, if I log-in as an admin and try to look at other member’s custom tabs,
the site redirects me to homepage!
4. Furthermore, if I manually enter the url with the addition of “?profiletab=<mycustomtab>&um_action=edit, then I can edit it successfully. However, when I save it, the action again triggers redirection to homepage (the form gets successfully saved though).
5. I don’t have ANY other plugins activated besides UM and the tabs. Went over all the settings and all the variations of visibility for the tab, nothing helped.
6. Is there a quick fix for this? Perhaps some URL manipulation?