Wall slanted - Strange opening surface and wall end behavior

[Mario Sacco]

It seams that in wall slanted the wall opening surface does not has applied correctly. Also the wall end has a strange behaviour
In archicad 20, last update

[Barry Kelly]

Yes I am seeing the same with my windows (I don't use the Graphisoft ones although mine are based on very old Graphisoft windows (version 6.5)).
I have never had the need for slanted walls with windows so have never noticed.

The inside and outside surface materials are swapped.
The external reveal is the internal surface material and the internal reveal is the external surface material.
Even my external sill adopts the internal wall surface material.

I am not seeing a problem with the wall ends but that may depend on what they join.

Barry.