Could you provide some screenshot examples of what you mean?
If he's talking about the wheel turning the wrong way then a screenshot would be little use cause it doesn't show motion. Would be handier if he would give us a location in game to check it out.
In "Morkuldum" - Orsinium, locked crafting station. There's are big waterwheel there, in one of the rooms. Don't think it's a drop fall watermill (I've been studying) so the buckets go the wrong way, they carry water up and over the waterwheel as opposed to collecting the water to push the water round.