2.6.1: Rename tab produces two tabs, one with old name, one with new.

As above. Rename tab “CodeaUnit” to “aaCodeaUnit”. Wind up with aaCodeaUnit where CodeaUnit tab was, and a new tab, CodeaUnit, at the end of the list.

Thanks for finding this. It’s a bug that was introduced when things were changed so that the editor could work with other apps like working copy. I have this fixed in 2.6.3, but I need to wait for Apple to approve 2.6.2 first before I can even put it into review.