When require-membership-of contains invalid groups, all users cannot login. Even when the user is in one of the groups in the require-membership-of list... We must ignore invalid groups, and let users in one of the valid groups login.
Created attachment 4864 [details] patch for v3-3-test
Created attachment 4865 [details] patch for v3-4-test
+1 from me. These look good patches for 3.3.10 and 3.4.3. Re-assigning to Karolin for inclusion. Jeremy.
Pushed to v3-3-test and v3-4-test. Closing out bug report. Thanks!