bug#50970: 29.0.50; Italics cause fill column indicator misalignment

[Eli Zaretskii]

> From: Carlos Pita <carlosjosepita@gmail.com>
> Date: Sat, 2 Oct 2021 15:35:22 -0300
> Cc: 50970@debbugs.gnu.org
> 
>  That's too bad, because it means I have no reliable recipe to
>  reproduce and debug the problem...
> 
> Indeed it is. If you know of anything that could be affected by subtle timing 
> issues or something like that, just
> let me know and I will do my best in order to test it.
> 
> Just in case, here is the dump for the minimal configuration:
> 
> In GNU Emacs 29.0.50 (build 1, x86_64-apple-darwin20.6.0, NS appkit-2022.60 
> Version 11.6 (Build
> 20G165))
>  of 2021-10-02 built on Carloss-MacBook-Pro.local
> Windowing system distributor 'Apple', version 10.3.2022
> System Description:  macOS 11.6

Maybe it's specific to macOS?