Case
Please check why I cannot open Opportunities Page in Custom package (user Supervisor). It is loading forever.
Solution
We've recently fixed the issue with opening of the "Page" tab in the section wizard. The reason of the issue was in the same name of the detail and the item on the page. The detail itself is called "Project" and there was an item on the page called "Project" and because of this duplicated name there was an issue with infinite loading (http://prntscr.com/ls2ewe - Project_Test was Project before we've renamed it). But as for now we are able to go to this page, just refresh the page in browser and you will also be able to do so.