Crouch down, Windows, Piles and Change of target

During my gameplay I noticed these bugs:
Crouching is canceled whenever I am going to attack, mine or cut something.
The windows of a house, as well as the door, are serving as a foothold to recover stamina from climbing.
It is absurd to need 20 branches to make 1 spear and then 5 spears to make a dam of thorns.
There is no correct button or system to change targets. Focusing on a single target in the middle of a fight where there are 2 or more enemies becomes a disaster. Cam positioning is also buggy.