Describe the bug
When putting a stack of items into the chest with an item count divisible by 9, the last block that is created by the chest doesn't merge with the other stack of blocks automatically.

To Reproduce
Place a compacting chest, put a stack of compactable items with a count divisible by 9 (e.g. 54 shimmerstone gems). It doesn't matter if the items are put in manually or shift-clicked in.

Expected behavior
The chest should create 7 blocks of the compacted item in a single stack/slot.

Mod version
spectrum-1.2.7-1.18.1-midgame8

Screenshots