Problems with designation marks for export vehicles in the German tech-tree

I noticed that a lot of the German high tier designation marks for exported cold war vehicles still have the Wehrmacht’s Balkenkreuz, instead of either the Bundeswehr’s iron cross or the NVA’s rhombus.
This only applies to some planes, but not all, which I thought was due to them just not being updated yet, but I recently learned from a friend that all vehicles in his tech-tree have already been updated, which confused me.
Since then I’ve tried basically everything I could imagine to try and solve this issue starting with letting Steam check for errors to straight out un- and then reinstalling the game.
Am I the only one who has this poblem / is this a known problem? And how could it be solved?
Thanks for the help in advance :)