Web interface visual bugs

Installed a fresh copy of the 1.55 image on a Raspberry Pi 2. While I can playback music and manage music over SSH (mpc) or with various Android mpd apps, the volumio web interface is not rendering properly (tried Chrome, IE, Firefox, and Edge). Menu items overlay the page and buttons don’t respond. See attached screenshots. Any ideas?
Screenshot 2016-07-10 at 10.10.55 AM.png
Screenshot 2016-07-10 at 10.11.30 AM.png

1.55 has been superseded and no further work is being done on that code base. You should take a look at Volumio 2, which is in pre-release at the moment but very close to being complete.