bug#51246: 29.0.50; New tab button on tab bar doesn't respond to button up events

[Eli Zaretskii]

> Date: Sun, 17 Oct 2021 11:11:39 +0800
> From:  Po Lu via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> In master and emacs-28, clicking "new tab" results in a new tab being
> created immediately when the mouse button is pressed, without waiting
> for it to be released.  This behaviour is very annoying!

Please explain why it's annoying, and why you cannot solve your
annoyance by rebinding the relevant commands to the mouse gestures
which you find less annoying.

Thanks.