Here is the fix for this:
In ProceduralOpening line 216
float hf3 = height - windowFrameSize * 2f;
float windowHeight = (hf3 * verticalWindowSize);
then line 232 replace "height" by "hf"
else if (type == DataModel.FloorMapItemType.Door)
{
clip.Add(new Vector2(mw - windowWidthHalf, hf - windowHeight));
clip.Add(new Vector2(mw - windowWidthHalf, hf));
clip.Add(new Vector2(mw + windowWidthHalf, hf));
clip.Add(new Vector2(mw + windowWidthHalf, hf - windowHeight));
}
Thanks for reporting!