When placing a supplementaries sack onto a sled, the items inside the sack are deleted.

Versions:
Minecraft: 1.19.2
Forge: 43.1.43
Supplementaries: 1.5.13
Snowy Spirit: 2.0.7

How to replicate:

• Place a sack, then place a sled next to it.
• Put some items into the sack.
• Break the sack
• Place the filled sack onto the back of the sled
• The sack is now empty

Fixed