Forge version: 2565
Botania version: 352

Steps to reproduce:

1. Equip a rod in the offhand. Tested with the Unstable Reservoir.
2. Use it.

What happened: After a currently unknown amount of time/uses, hand animations stop working. When placing blocks, the block in the player's hand doesn't move at all. When swinging a sword or right-clicking to use an item that has a specific animation, it instead does a small item update animation, nothing more.

In third person, no animations happen at all.

Restarting the game fixes it temporarily.

Video in case I didn't explain it well: https://www.youtube.com/watch?v=E5F4KFVsumA

When I go third person, I first attempt to swing the sword, then use the rod. I'm saying this because it looks like I'm doing nothing,

If this is not actually caused by the offhand usage, but something else, please inform me so I can direct this to whoever/whatever is responsible.

Apparently actually caused by having very high levels of haste. Hmm.