I had a bundle, and I was putting it into my sophisticated backpack after filling it up with an assortment of different drops and such things from mobs while exploring. I held shift on it for a split second and it crashed after transferring it.

LegendaryTooltips-1.19.2-forge-1.4.0.jar
Quark-3.4-401.jar

Crash report:
crash-2023-05-24_19.41.53-client.txt

ok. I'll go check it soon.

I believe this crash has been fixed in Quark 402. I will close this issue, but feel free to reopen if Quark 402 does not fix it.