(Using Xiaomi Redmi Note 4G)
Last time I tested out the MCPE 0.11.0 build 2 boat, but it works badly.
In my first try, I got into a boat and stuck in a directon (left/right)
If you force to turn it to other direction, it will glitched out, badly.
Sometimes work perfectly, sometimes not.
Hope Mojang can fix this.

VIDEO: vid.me/vdid

Also sometimes if you close a world, it will force exit.
Report: pastebin.com/L7yLFd3W