The Archaeology Stash Chest model is in the fully open (end) position when uncovered.
When opened its animation cycle jumps back to the closed (start) position and gradually opens, cycling through the animation until it is in the final open (end) position again.
This visible jump back to the start of the animation is distracting and in my opinion detracts from the experience.
Ideally the chest model should start in the *closed* position when found, and stay closed until the chest is opened by a player, when the opening animation can then begin.