Redstone Mechanic Crash

Upon closing a 4x4 piston gate with a T-flip mechanism, the game crashed. The game doesn't crash when opening the game with the same mechanism, only closing.

What I expected to happen was...:
I expected the gate to close

What actually happened was...:
The game crashed

Steps to Reproduce:
1. Construct the 4x4 piston gate by Mumbo Jumbo (Youtube)
2. Install T-flip mechanism perpendicular to gate
3. activate mechanism with a stone button placed on top of a block