Multiblock blocks instantly break when placed using a Jigsaw structure

• Short description of the issue

When a multiblock set is loaded in a structure file, and placed via a jigsaw structure, the other blocks are placed normally. However the multiblocks are instantly broken when loaded (including sounds and particles). It is worth noting that it works normally when using /structure, the problem only seems to occur with jigsaws

• Steps to reproduce the issue

1. Load the pack attached or create a pack that has a jigsaw structure containing a custom block using the multiblock trait

2. Place the structure either by natrual generation or /place

• Expected result

All blocks are placed like normal, and the multiblock behaves like as if placed by the player

• Actual result

The multiblocks and only multiblocks are instantly destroyed