Parts seem to snap to weird positions

[Mignear]

This is particularly noticable on wing parts, lets say you adjusted a wing and then took it off to fiddle with something else, then tried to put the wing back on, the wing would snap to weird positions.
It'll be upside down or facing backwards.
In this screenshot you can see the wing being upside down. I had already built the wing and added parts that is facing forward, but on reattachment the wing either became upside down(while everything else attached is fine), or the entire wing(and its attached parts) faces backwards.