Subject: RE: [External] : bug#61601: [PATCH] * lisp/isearch.el (minibuffer-lazy-highlight-setup): Use cursor-in-echo-area

From: Drew Adams <[email-masked]>
Date: Sat, 18 Feb 2023 22:43:14 +0000

> The flickering happens because the cursor briefly moves from the
> minibuffer to the minibuffer selected window when the lazy highlighting
> is done (e.g. after typing a character in the C-M-% regexp query).

FWIW -
No such problems existed before Isearch started 
using the minibuffer instead of the echo area.