Checked for existing issues

• I have checked for existing issues, and have found none.

Tested latest version

• I have checked that this occurs on the latest version.

GregTech CEu Version

1.6.3 SNAPSHOT

Minecraft Version

1.20.1 Forge

Recipe Viewer Installed

JEI

Environment

Singleplayer

Cross-Mod Interaction

No

Other Installed Mods

Custom ATM9 - 574 mods

Expected Behavior

Expected Multiblock to form when correct parameters were met, so long as constrained to the 15 cubed block limit

Actual Behavior

After extensive testing, all plascrete, old elevator fix etc, discovered Multiblock would only form if it was a perfect square on the X and Z Axis, Y axis differential did not effect the outcome.
Moved Multiblock multiple times, contained to one chunk, different clean room Multiblock controllers, different maintenance and energy hatch positions.
Only formed as expected when a horizontally perfect square.

Steps to Reproduce

Step 1: Build a clean room that is a rectangle on the X/Z Axis.
Step 2: Multiblock fails to form.

Additional Information

2 errors spamming during the Multiblock form checks:
1: [GTCEu Multiblock Async Thread-0/ERROR]: Error while assembling Multiblock com.gregtech.grace.common.machine.multiblock.electric.CleanroomMachine@01d896997: Null
&
2: [GTCEu Multiblock Async Thread-0/ERROR]: Error while assembling Multiblock com.gregtech.grace.common.machine.multiblock.electric.CleanroomMachine@01d896997: Index 9 out of bounds for Length 9

Already fixed as of #2678