Launcher: v.2.8.2-1.3.7?  (launcher main page) OR 1.3.7 (1) from About

Behavior:

When not connected to the internet, the launcher continually fails, closes, and relaunches itself, taking the screen focus back each time, making the device unusable without rebooting.  Ironically it's not even feasible to join a network while it's doing this.  I let it run for about 30 second and it didn't stop on its own.

Use case:

Traveling with the kids and trying to play Minecraft to pass the time, without access to wifi.