Wall covering bug

I will file a ticket for this one, but wonder if anyone else has experienced this.

An interior wall, part of which happens to be a a part of a stairwell, an "open below" room, is selected on its away face, the outer face given the wall spec, for addition of some color, high and low. Repeat, I am doing this colorizing on the face in the room opposite the stairwell.

I specify color A for zero up to 29 inches, and then color B for the area from 29 up to 96.

Color B does not happen at all, and color A goes on the primary side bottom, as specified, with color A going on the reverse side of the wall from 29 up.

Que es esta?

Oh, for those of you who took a look and may have downloaded the file re the dormer headaches I was having, it is on floor two of that one, if you care to look further. See below.