OBD U6 - Windows and doors not cutting through all wall layers.

Hi all,

I've started working through the Quickstart Architecture training and ran into trouble.  The doors and windows are not cutting through the gyp board layer of the compound wall  I've adjusted the sense distance to be larger than the wall and it still isn't cutting.  If I place the window in the opposite direction it works fine.  I searched the forum for a clue but didn't see an answer.  Can anyone offer any advice?  Sorry for such a basic question.