[Mission editor] View direction indicator in 3d view is mirrored

[coconut]

In the mission editor, in the 3d view, there is a circle in the top left corner that indicates the direction in which the view is looking. It seems it is horizontally mirrored. See the snapshot: I'm looking from the outskirts of Kalach, to the bridge and hills to the west of the city. However, the symbol appears to show I'm looking east.