Why do I see the outline of every single component in my model (even through walls?)

At some point, my model started acting up and added all those wireframe/outlines all over the place. I can see all of the components in my sketch through walls and other components.

I saved the file and refreshed the page and it’s still there. What else can I do about this?
Thanks!

That’s not a bug! Those are back edges. You probably hit K which turned them on. Press K again to turn them off.