Thank you for your post.
The only thing that I can think is the issue is that the 'Hidden on Plan' layer isn't turned on (ticked) in your SketchUp Layer Manager when you're creating the section hatching. This is the most likely cause if the issue occurs when you're creating the section hatching for floor plan scenes.
Would you be able to please let me know if this fixes the issue you're having?
If that doesn't fix the issue, would you be able to please send the model with the issue to email@example.com
so I can have a look into it?