I didn’t think is a bug as such, just an annoyance at the moment.
I think it would be a good idea to automatically rotate/fit the conveyor based on the existing ones, rather than a default direction.
If you plonk down a conveyor, without “dragging” it the direction you want it to face, you may end up with “Conveyor in wrong direction”, when placing it on a rotated production unit, but the conveyor is facing the other way.
Just a little thing that would go a long way to improving the smoothness of playing.