I have multiple users that are having a problem with assigning issues to other users. When typing letters of the name into the Assign To field, only handful of select users show up. And it does not search the user that matches the username being typed in.
I have confirmed that the proper users are in the assignable group; the assigning user is in the Assign Issues group; and I have verified that jira-users all have permission to Browse Users globally. As an administrator, I'm able to use this function completely across the board. But, it does not work for selected other users, even though it appears all permissions are setup properly.