Adding window to room - failed due to inaccurate model? (HB 1.1.0)

Hi,

I’m trying to add windows to rooms in HB 1.1.0, and I’m having issues with my geometry.
See the GH definition below:

I’m getting the following warning:

  1. The following sub-faces were not matched with any parent Face:
    4fd804c8-b5a0-4857-b4e6-00eaa9cf8b2d_0_e2c9b0c2

Is it a tolerance issue? My Rhino tolerances were set to 0.01 Meters, which was quite coarse.
I’ve tried making sure the faces are coplanar by setting the control points along the X axis with SetPt.

Creating rooms from scratch did work with windows this way (with the setup above).
I have quite a lot of rooms already in Rhino and I would be curious to hear what the solution could be without remodelling the whole thing from scratch.

Geometry should be internalized.

LB_forum_adding window issue.gh (20.4 KB)