I have a custom System Master Page. When I am on the People and Groups page
/_layouts/15/people.aspx?MembershipGroupId=5, my master page looks fine. However, when I change the View or go to the next page if the group has more than 30 members, the master page changes back to the default!
The URL gets a few more query string parameters that seem to cause the master page to be reverted (not just a post back), as fresh requests still cause the master page to revert with either the
View query string parameter or the
p_Title query string parameter. Obviously I don't want the master page to change, but my body tag is definitely being replaced so I don't think this is a delegate problem.