When we upgraded to 1.9 the trust level 4 users seem to have lost their ability to set timers for topics. So they cannot auto-close topics or close them temporarily. They can close them in a regular manner, though.
Topic timers are staff only at the moment: see Scheduling topics for future publication. I fully support giving TL4 users topic timer permissions, but that’d be a new #feature, not a bug.
@jomaxro Yea topic timers are supposed to be available to admins and users with trust level 4 or higher. Do you recall why we restricted it to staff only?
It came from this topic: Scheduling topics for future publication. Topic timers were not working for TL4 users when I tested it (timers could be set but nothing would happen when they triggered), so Jeff said to disable it unless it was an easy fix.