using a Nextbook 7" tablet (Next7P12-8g), Android v 4.0.4., kernel 2.6.34

I have two of the same tablet, so it's not just a fluke.
I encounter the bug often by accidentally bumping into the 'jump to desktop' button, and re-entering the game (no matter how long of a pause I use between returning).
When I resume the game, often the screen is shaking and I cannot access the menu, even while pressing the (back button). These results are intermittent yet persistent. If it happens during loading, the same 'loading chunks saving etc' garbage flashes really fast.

The last time it happened in-game, I was able to swipe the screen sideways turning the character, and noticed that My character could not turn a certain direction without the violent seizures. I could pull him in and out of seizure mode by facing ??? direction.

This is quite bothersome when I am playing single player, but even worse when i am hosting a multiplayer with my kid, as when the game joiner quits they lose all of their items unless they place them in a chest. (second bug?)

Both of my nextbook with current version are experiencing this problem, with full charged battery might I add; looks like a software issue.

Thank you for your concern and investigation into this matter.