Renaming a stack of previously unstackable items behaves unexpectedly

[NovaXe]

Renaming a stack of 64 beds for example will destroy the anvil, drain a single experience level for each bed and destroying the anvil.

To Reproduce
Steps to reproduce the behavior:

1. Set beds to be stackable to 64
2. Give yourself atleast 64 levels and an anvil
3. Switch to survival and rename the stack of beds to anything
4. Witness a horrifically loud sound that simultaneously breaks the anvil and drains you of all your levels

Expected behavior
It should use just one singular level and not demolish the anvil

Version:

• Minecraft Version: [1.20.1]
• Mod Version [v2.0.0]
• Java Version [1.17]

Additional context
Ow my ears

[KrisCris]

This might be caused by a previous fix of anvil deleting the entire stack of items, IIRC.

I don't consider this a bug, but is indeed a QoL improvement! Will try to figure this out when I have time.

[NikoboiNFTB]

Similar issue, I renamed 20 ender pearls (stack size 64) to something else to use in a sorting system, and the ender pearl duplicated into multiple stacks of 64 and loudly destroyed the anvil.