Sophisticated Backpacks with Smooth Swapping
Forge 1.19.2
Shift click upgrades into pack.
Mouse tweaks WAS also installed, but didn't effect the outcome.
Not Enough Crashes Report
Perhaps add a catch to this error that simply disables the animation when ever this error is thrown. Could greatly improve mod compatibility.

i too hav had this crash occur

I am also having the same issue with the same mods, this also happens with "baguchan" version of smooth swap

i am having this issue. here's the report crossposted from their github https://mclo.gs/ZGDv3ql

Issue still exists... Is there any workaround against the crash except disabling Smooth Swapping?

Sophisticated Storage too, as it's an incompatibility with Sophisticated Core, not Sophisticated Backpacks itself.
I get it when shift clicking items out of the backpack, but not when I shift click something into it.

Just noticed that this is a duplicate of #63