Screens sometimes display the wrong texture when the multiblock is updated

[EcoBuilder13]

When you break screens they sometimes don't update the top texture. This affects the builds from the bb46ed9 commit.

• Rebuild on Chunkload
• Fix Multiblock correctly when broken

[lucsoft]

Yea this is a known problem I hopefully fix this tomorrow

I made a commit that fixed it but in some cases it get's broken

When you load the world the screens get disconnected too