Plan de section bug?

Bonjour
Hi

Lors de l’utilisation de plan de section, une partie de mon modèle semble plein, alors qu’il ne l’est pas.
When using section plane, part of my model looks full, but it is not.

You probably have Section Fill turned on in your style settings.

Do you use groups (as it should) or do you have raw geometry (on the right is ungrouped geometry)?

Thanks for your reply

I am newbie to sketchup
I must have built the solid walls of the apartment badly.

I have unckecked “remplissage coupe” in Styles window settings

Now, no more issue.