Floor Finishes cannot be seen under a door opening

[octavio2]

The white cut under a door opening can be seen, and not the floor finishes which were extended under the door cutout with the Edit Boundary command.  The pink lines of the finishes Edit Boundaries were modified to extend under the door opening and can be seen in Sketch Mode. 

The floor finishes are 1/8" over the floor concrete slab.   The floor finishes can be seen on each of the rooms on each side of the door, except at the door location as explained above.

Question: How can the floor finishes under the door can be seen?

Thanks in advance.

[octavio2 · Accepted solution]

Problem solved:

There was another similar interior door where the finishes were seen underneath, and upon investigating, the door where the finishes were not seen had the "sill height" in Properties listed as 1", and the other one where the finishes were seen was listet at 0 (zero).  When the door with the sill height at 1" was modified to have the sill height at zero, then the finishes showed up. 

Thanks.