If I pick up an item that not yet exist in my inventory and hotbar and a have a free slot in my hotbar and inventory.
The item are moved instandly after i pick it up from my hotbar to a free slot in my inventory.

I don't like this behavior and I couldn't find a way to turn it off in the options.

Game: 1.19.3
Loader: Forge 44.1.0
Mod: 1.9.2

this is how vanilla behaves

Thanks, a small improvement:

Pick Items directly into the inventory only if a stack of the type already in the inventor

I mean if a full stack (64) exist. Then the Item can create a new stack in the Inventory instead on the Hotbar.

it's in the locked slots page

I will check how easy is to achieve this and if it's not too complex I'll add it as an option