[ownedbycats]

I ran into a glitch where automatically apply view can point to a nonexistent view and cause a menu glitch. Steps to replicate:

1. In VM configuration, make sure that 'Automatically Apply View' is set to "Last View Used."
2. Switch to a specific view.
3. Go to VM configuration and delete that view.
4. Restart Calibre.

Upon restart, the menu no longer appears when clicking the view manager button on the toolbar. I was able to resolve this by using Plugin Updates to access the VM configuration and setting auto-apply to a valid view.