I've noticed a frequent pattern of mine:
- Designing a page and need something I have from another page
- Switch to another page and copy it
- Go back to pages and find the previous page.
My suggestion is that when a page is selected in the navigator, and the following action is copy, show a back button in the top bar that brings me back to the previous page.
Not sure if we have that type of sequence recognition but would be a neat UX thing.