If when these tags are stuck in Uncertain the Logix devices they belong to are in a perpetual Idle state then it’s a known issue.
Coincidentally, I think we just tracked it down and I’m going to be resurrecting one of the old threads about it to upload a module for testing.
If it’s not the Idle thing and instead you see errors in the logs when browsing/re-browsing then it’s a v32 firmware bug that has to be remedied by a program download or (reportedly) upgrading to v33.