Rename method doesn't work as expected

I'm using Appcode 3.3.1 Build n. 143 382

Step to reproduce:

1. Open an iOS project
2. Select an Obj-c method
3. Chose "refactor -> rename" from the contexual menu.
4. Type a different name.
5. Hit return.

Current behaviour: The name of the method roll back to the previous one.

Expected behaviour: The method is renamed (as well all the usages)