On one of our installation sometimes the bottom line of the "home screen" (history, contacts, home, gate, settings) disappears. Only number keypad is visible. To get the bottom line again, we need to force shut down Linphone and restart.
Linphone 2.3.2-115-g3b4cc02SIO (rfc 3261) - installed from daily builds
on Samsung Galaxy GT-i9100,
Cyanogenmod 10.1.3-i9100 (Android 4.2.2)
Have you any ideas how to solve/avoid that?