[Bug 1.64 ] Duplication of Conveyor

When selecting conveyor between slots, the game “paints” the conveyor on tiles which have not been selected. After reloading the game, the tiles disappear but this behaviour then reoccurs. This makes it difficult to place conveyors as they occupy unused space.

Having same problem and the demolish tool will not remove the unwanted conveyors. Game is now unplayable