Having to approach a simple rename as 10 years ago sucks. Having to do that because the latest IDEA bugfix release shipped with unreliable rename refactoring is even more annoying... :-(
These are 2 tickets I know of. They're marked as normal with no (visible) feedback from JetBrains, other than being assigned.
I also submitted tons of error reports during the EAP related to this issue (or family of issues, because there's more than one thing that's busted). By the looks of it I'm not alone in experiencing difficulties with various refactorings. My log files are full of "java.lang.IndexOutOfBoundsException: Wrong offset: 20876; count:20873" entries.
Since most of the later EAP builds were plagued by these exceptions (at least for me) and you shipped without fixing them, it means you considered them isolated incidents. If so, could you provide some more information as to what's "expected" to not work, what triggers this and what other things get busted once these exceptions start flowing?