After search with AD has been fixed via other unrelated search fix, user reports that he can search again, but only usernames are returned, no names, emails. This can of course be a problem with the server/database/AD configuration.
Another user reported that he can see names and emails coming through in a debug, so maybe this is not AD/database issue, but Spark not mapping this values to fields in the search dialog.
Thanks for testing. Closing for now as Cannot Reproduce. Can reopen if someone complains again.