bug#52294: 28.0.90; Large delay between clicking tool-bar item and it displaying as depressed

[Eli Zaretskii]

> Date: Sun, 05 Dec 2021 14:04:09 +0800
> From:  Po Lu via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> 
> Clicking any tab bar button doesn't result in it being immediately
> displaying as depressed: instead, you have to move the mouse and wait a
> few seconds for it to be displayed that way.

I cannot reproduce that.  Here the reaction is immediate.

Please try to profile Emacs when you press the tab, maybe it will give
some hints.