It's happening on PC as well. The desync is really bad, yesterday my gf tried to remove a blueprint wall but the game decided she was not standing where she thought she was, hence she removed an important foundation while she thought she was removing a misplaced blueprint wall, which led to a collapse of our zipline tower...
I also had problems when I tried to open a chest but the game thought I'm in front of our workbench and opened the bench instead...
Even while trying "to nag" my gf with an arrow in the head, the game once decided a wall 10cm away would be a better target. As a matter of fact I wasn't even looking at a wall while shooting that arrow.
I have the feeling that the desync is getting worse with every patch instead of getting better...
It's a shame because Grounded is such a nice coop game if it only had less desync problems