We have currently removed the code to retrieve the sid list for users without previous authentication, as the results are typically wrong and unreliable. But a lot of users rely on this broken behavior, so we better restore the behavior of 4.5 and former releases. We can try to get this implemented correct using s4u2self for the 4.7 release.
Created attachment 13026 [details] Patches for v4-6-test
Reassigning to Karolin for inclusion in 4.6.
(In reply to Ralph Böhme from comment #2) Pushed to v4-6-test. Closing out bug report. Thanks!