Currently playing Greedfall, so I'm probably not going to be testing stuff like last time for a bit. I used the bags a lot last time, they can be put on the action bar and opened up without having to go to the inventory. Originally you had to right click the items in the bag if the bag was on the action bar. If you left clicked it would of sent the item to your inventory and ejected out of the bag.

Try removing items from the bag while the bag is open or throwing stuff on the ground, picking stuff up and dragging it into the bag and also these steps while having the bag open on the action bar.

Just some stuff I'd test, you do you though.