Hi, some kind of nuisance.
When having a door in a wall standing on a slab, from AC20 the wallhole extends below the door, down until the slab, which is a technically correct solution.
This is done by, I guess, extending wallhole downwards.
But if there is a reveal, there is another wallhole for that, and it fails to extend, so under a reveal there is a brick "shoulder" that is a nonsense technically.
It seems that it cannot be fixed: if one extends the wallhole from within a GDL command, there will be no concrete above the slab.
GDL/Python/C++ dev