I have a frequent problem with many of my interfaces not showing the 'Is Implemented by' link. Some show up properly, but some don't. They are all in the same module and many are in the same package.
I have tried deleting my cache, cleaning out and rebuilding my project, and even uninstalling and reinstalling idea to no avail. ( I also deleted the .IntellijIdea directory under 'Documents and Settings'. and the IDEA directory under 'Program Files' )
I used to see this every once in a while, but it has gotten progressively worse. Has anyone else seen this? Does anyone know a solution? I've done everything I can think of to do without making any progress.