Crash due to Block 36 / Piston "Ticking Block entity"

A Redstoner called Robobrine sent me his missile factory that contains also pistons.
In 16w40a it crashes, in the previous 1.11 snapshots it doesn't.

If you relog into the world after the crash, you'll continue to crash.

Crash log attached, untouched/not-yet-crashed worldsave also attached.

Steps to reproduce the crash
Simply open up the world in 16w40a and hit the button to the very left, wait for a few seconds.

Ticking entity: MC-108358
This post: Ticking block entity.

Difference in how it is being triggered.