Epic Games Wagons Not Attachable / Detachable

Hey there,
I found an issue in TSW4, which is about attach / detach some wagons.

Tested on Nahverkehr Dresden -Riesa Route and on training centre.
One thing in advance: locomotives are attachable to / detachable from the wagon.

I've noticed that wagons like BR 106.1, 284.4, 766.2 (wagon end 2), 785.2 do have the issue that the attach / detach-point doesn't show up from outside.
The wagon BR 780.3 and 767.2 (also wagon end 2) however do show the point and are attach-/detach-able.

I've also checked via the mod Godmode by spawning a BR 766.2 and 780.3, if the point from the 766.2 is maybe missing.
Furthermore I've found out, that by standing between, inside, of both wagons, both are attach-/detach-able, but once attached you can't get out, you are caught between the buffers.

The Camera (8) was also not useful, same problem here.

Long Story short: The points on the mentioned wagons are hidden and not accessable from standing / acting outside.

I've added a picture of 2 wagons BR 106.1, where you can see the missing point / action.