This sounds different from what the original post is about but I tried to recreate your issue and I don’t see this on my end. When I expand the DOM structure, everything I’ve expanded remains open. Even when I leave the navigator to view Collections, Assets, Components, etc. When I return to the navigator everything is expanded as I left it. If I click on an element within the page, the navigator automatically expands to show me where the object resides. At what point does everything close when you’re using it?