Offline Search is broken

[Peter Olins 66]

I have the following problems when trying to search my database offline:

1. The search box often refuses to accept text input

2. Depending on the search term, Search is extremely slow (e.g. 2-4 minutes), making it virtually unusable.

3. Global Search cannot find text within the PDF sections of notes — but if a specific note is selected first, Search within note does work.

4. Returning to "all notes" after completing a search takes ~15 seconds

Is it just me?

intel mac's:
OS: 10.13.6; 10.15.7; 11.1
EN:  10.5.7

iPad Air (3rd generation)

30K+ notes, 16+ GB database

(NB not really a "Level 5"!)