Searching Notebooks Hangs

When I search by notebook name, the search just spins (all I see is the blue circle).

I have almost 3000 notes in almost 300 notebooks.

When I open the notes tool, I can choose between All Notes and Notebooks.

If I choose All Notes, it works as expected. The note search function is very fast.

If I choose Notebooks and pick a particular notebook, it's still fast to search for a note inside a notebook.

But when I try to search for a notebook, the search just spins.  I thought it might just be slow, but I left it searching overnight and it was still spinning in the morning.

The app itself doesn't hang... I can leave the search and open a Bible, or go back to my notebook list.

But If I go to a different resource and then return to the notes tool, it will still be spinning it's wheels.

Has anyone else experienced this?