This build has ran perfectly for me except for 4 bugs:
1) The keyboard has a small area above it where you can see your background in a glitchy way.
2) Sometimes the messages app will have black blocks all over a conversation.
3) App opening animation slower than before, appears almost laggy.
4) AM/PM next to the time at the top right of the screen is out of place.
(Hire me as a beta tester, wooo)
Is there any way to perform an update after installing this build to get the latest 1.4 bug fixes from Mozilla?