bug#40796: 28.0.50; Cannot adjust font size in Emacs 28

[Eli Zaretskii]

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> From: Raoul Comninos <revcomninos@gmail.com>
> Date: Thu, 23 Apr 2020 17:25:49 +0200
> 
> I have two versions of Emacs on my PC. I use Emacs 26.3 and also the latest 
> developmental version as
> indicated above. The problem does NOT occur in Emacs 26.3. If I try to change 
> the font size in Emacs 28 as
> I would normally do via customize group/Faces/Basic Faces/Default/Save for 
> Future Sessions, the new font
> size does not persist between sessions. It lasts only as long as the session 
> itself. If I try to change the font
> size via the Menu and Save Options I get the same result.

This works for me, with the current master branch (and with any other
version of Emacs).  Assuming you verified that the customization is
saved to your init file when you click Save For Future Sessions, I
think something in your other customization reverts to the original
font size.  Try to start Emacs with an empty .emacs file, and then do
the same and see if the problem goes away.