Subject: Re: bug#51794: 29.0.50; invalid input events generated from a mouse click for the tab bar

From: Eli Zaretskii <[email-masked]>
Date: Fri, 19 Nov 2021 09:54:16 +0200

> Date: Fri, 19 Nov 2021 09:01:16 +0200
> From: Eli Zaretskii <[email-masked]>
> Cc: [email-masked]
> 
> Specifically, why does this happen to you only under those
> customizations and not in "emacs -Q"?

Could it be that some package you load enables mouse-tracking?  if so,
which one, and for what purpose?