Yeah it just feels buggy from what I can see - and its not even so much a positional thing, the players are roughly where I'd expect them to be, they just don't seem to do anything positive in a defensive sense.
I'm managing Real Oviedo so I know I'm not working with elite defenders, but neither am I playing against elite attackers and one of the comments in the thread you linked mentioned shepherding and thats the best way to describe it.
My defender "I'm coming out to close you down, so don't you try anything fancy"
Their attacker "Ok" *points left but goes right*
My defender "Oh FFS, not again"