Steam Fife Circle Class170problem Opening Right-hand Doors With Button

Hello. I've noticed (for example in timetable 1L73 Edimburgh Dundee) that the right-hand doors don't open with the door release buttons (it only releases the left-hand side, but the platform is on the right).

The only way is to use the keyboard shortcut for the right-hand doors.
Edit : I found a way to open them on the right: get up from the seat, go to the cabin door on the right and there are buttons to open and close it.

 

It's been bugged since day one, it might get fixed or it might not.