Section cut fill issue

Using this generic example of a slab, the program does not understand that it must fill the cutting plane when there is a component that has the “cut opening” property activated (figure A) but understands that it must fill the cut when the geometry is just hidden , as was done with a rectangle (figure B)

Am I doing something wrong or is this a program issue?

there is a one cutting plane activated for the figure A and B, but in “figure B” the cutting plane is filled in automatically, and the same does not happen in “figure A”

Section cut fill doesn’t work with glued components.
Glued components doesn’ t really create geometry.