Re: Menu-bar flickering on Win10

[Eli Zaretskii]

> From: Arash Esbati <arash@gnu.org>
> Date: Wed, 02 Nov 2022 13:08:51 +0100
> 
> This is with 'emacs -Q' and 'Corfu' providing the pop-ups.  Is this a
> known issue with child frames?  I'm asking if it's worth filing a bug
> report.

Does the code involved in the display of completion temporarily
switches to a different window, or changes the major mode?

IOW, I suggest to step through the code which is involved, and see
which part of it actually causes the flickering.  There's too many
unknowns in what you described.