Steps to recreate the problem:

1. Click on a collection.  It shows a view list.  Select table view.
2. Open a new tab, it shows the collection as view list.
3. Go back to first tab,  The view hangs with "Loading..." 
4. Also try different filters and different collections on different tabs.

The expectation is that each tab should maintain its old state, and the new tab should be blank without any collection selection, so that each tab can be used to view different collections or queries.