It frequently loses track of libraries, claiming large chunks of the codebase won’t compile until caches are cleared and it is restarted.
It gets stuck indexing forever, losing all code completion and navigation abilities until it’s restarted.
Git integration sometimes stops working. It will list the files to be committed but does nothing when you click commit, until it’s restarted.
Exiting presentation mode leaves the font set to a huge size (until it’s restarted).