That perspective looks pretty similar to one of my perspectives. (Project-mode, focused on a subset of my projects, same filter settings.)
I'm still not seeing the behavior in that perspective or in a new test one I set up. Maybe it has to do with what was selected/focused when you set up the perspective? Here are the steps I used:
- Select several projects in the Project-mode sidebar; do not select the Inbox.
- Select View -> Focus on <selected projects> from the menu bar.
- Select Perspective -> Save window as -> New Perspective from the menu bar.
Maybe my perspective-creation steps are different in a way that causes me to not tickle the bug?