Describe the bug
When shift clicking out of the crafting slot oversized stacks vanish until backpack is closed and reopened.

To Reproduce
Steps to reproduce the behavior:

1. Get yourself a backpack
2. Add a crafting upgrade and a stack upgrade
3. Throw random junk in bag to make oversized stacks
4. Throw a stack of logs into the crafting grid
5. Shift Click out planks
6. Notice that the oversized stacks are either empty or have the wrong count.
7. Close bag and reopen -- everything is back.

Expected behavior
Stacks should not get lost.

Versions
CraftingTweaks_1.16.3-12.2.0.jar
invtweaks-1.16.4-1.0.1.jar
[1.16.2+] Mouse Tweaks 2.14
sophisticatedbackpacks-1.16.4-2.4.0.251.jar
Forge 36.1.4