Hello, I am currently in the process of establishing a company store and I am interested in incorporating additional features. One specific requirement is to include a bookshelf, which necessitates recalculating the overall area. However, when attempting to execute the “intersect face” command, an issue arises.
With this configuration
Thanks for your answers
Share the SketchUp model file so we can see what you are working with.
What version of SketchUp are you actually using? Your profile doesn’t seem to match with your screenshot.
What operating system? 2023 is not an answer to that question.
And here is the version
Please correct your forum profile. SketchUp Pro is not the “Free Plan”.
Done 
@colin might have an explanation for the oddity with Intersect Faces. I suspect this is the “bowtie issue”.
Thanks for updating your profile. When it’s correct it helps us help you. When it’s bogues it doesn’t help anyone.
It’s curious.
It’s not just creating lines at the points of intersection (like it should), but seems to be creating all new geometry.
Sometimes it creates the good geometry, sometimes it’s doesn’t. Sometimes it doesn’t work on a single block, sometimes it does.I’m completely lost
I agree with @DaveR that this smells like a variation of the longstanding “bow-tie” bug in which an inner loop folds back over itself and confuses SketchUp’s understanding of what is a hole vs an inset face. There is lore about what sorts of drawing actions trigger a bow-tie and how to avoid them. But, so far as I know, despite years of knowing it happens, the developers have never implemented a fix and have never offered an explanation of why it can’t be fixed. Here we have the added complication that it is being created by the intersect operation, and a user has no insight into how that operation is implemented.
For a test, I brought the file into the browser-based version, and whatever this is seems to be there too, though overall behaving a little different.
