Phantom mouse movement issues with macOS

[Pavel Sanda]

On Mon, Sep 04, 2023 at 05:29:35PM +0200, Jürgen Spitzmüller wrote:
> Am Montag, dem 04.09.2023 um 17:10 +0200 schrieb Pavel Sanda:
> > The problem is that I see #12820 on Qt 5 while we try
> > to avoid releasing with Qt 6 because of #12641.
> 
> You see this bug with current master? This would be bad.

I have limited access to that machine so the only testing point in my hand is 2.3.7 + Qt 5.15 + Mac OS 12.6 (via homebrew).
I might be able to get another data point about 2.4 beta 5 + Qt 5 + Mac Os 13.5 (via our provided dmg).
No real debugging session available unfortuntely.

The landscape on BigSur is more complicated per Daniel's report:
"
I can reproduce a clicking problem on macOS 11.7.9 ) with
    LyX 2.4.0-beta3 (Qt 15.5.10) 
But I cannot reproduce with
    LyX 2.3.7 (Qt 15.5.7)
    LyX 2.4.0-beta2 (Qt 6.4.1) 
"

What a mess.
Pavel