Hi!
Thank you for the details, it helps a lot.
I think the issue here is only the results limit – by default it’s set to 10. When typing in a partial word, it matches less from different post type groups so the limit is met and some results might be cut off.
I have increased the limit from the initial 10 to 50.
If you prefer to have less results (<50), then I recommend enabling this option instead. That will try to fetch equal amounts from each post type group.
