bug#56155: 29.0.50; Options menu, toggle menu items not updated

[Stefan Kangas]

Gerd Möllmann <gerd.moellmann@gmail.com> writes:

> What I don't know is if this can only be seen on macOS.  On macOS, one can
> select an option from the menu bar, re-open the Options menu and select 
> another,
> wihout Emacs running anything in between the two selections that can itself 
> set
> update_mode_lines.  If anything else sets update_mode_lines, the ill effect 
> will
> not show up.  Just clicking in the text area runs a command...

FWIW, I can reproduce the issue consistently on my macOS machine, but
not on GNU/Linux.