Describe the bug
setting the backpack to refill Totems of undying into my offhand causes them to get deleted.

To Reproduce
Steps to reproduce the behavior:

1. put totems in backpack
2. put one in hand
3. set advanced refill to offhand
4. lose 74 totems in seconds

Expected behavior
I thought it would not delete my totems

Versions
Minecraft 1.20.1 on Forge

I am unable to recreate with just sophisticated mods. It will fill one totem and only refills when that one is removed. So this is very likely caused by some conflict of mods in your modpack. If you can recreate with just sophisticated please provide steps how I can recreate.

Upon more testing. it seems to be a conflict with two-handed weapons. I don’t think the backpack detects there being a totem in my hand when i’m holding a two-handed weapon, so if i have the refill set to offhand, it will drain the rest of my stash.

Then it depends how that mod has implemented the two handed weapons. Sounds like it's doing some Shenanigans with removing stacks from offhand. I am closing this ticket as all SB does there is simply put stack in offhand slot which player has under normal circumstances so fix for this issue would need to be found on whatever the mod is that adds two handed weapons (I guess even if it means just dropping stacks that any other mod may be putting in player's offhand).