Here is one to start:
Move Alert Sound OFF not working: It is set to OFF in the preferences, but still get a text-like sound when someone moves.
Update: I notice the sound alert doesn't occur if the app is open. Only when the app is closed or in background.
While we are here, it would be nice to be able to at least pick the sound for the alert.

Is there another list of known issues+bugs for the iphone app?
If not, this seems like a good place to start reporting new ones.