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> From: Fr Ml <fr_ml@t-online.de>
> Date: Mon, 9 Nov 2020 18:34:07 +0100
> Thanks for the answer. Good news  that one problem is solved.
> 
> I didn't mention details because I assumed that's the same problem and it wasn't my main question there. I
> chose the reproducable proble. 
> 
> But now some details:
> - I don't use ivy or ido
> - The problem happens after "some time" of working with Emacs, usually not directly after starting Emacs.   
>   Example : the 3 attached pictures are of the same text file (not org or outline), but with different text sizes. I
> have just the Arabic word العربية in it. And I'm using a monospaced Font: Dejavu Sans Mono.
>   In 'text8correct.png' everything is fine, "text size": +8 word , if I decrease to +7, the shape is not correct the
> glyphs are too dense. It remains incorrect until the size +5. At +4 it becomes correct again.
>   But if I open the same file with a new Emacs process I don't have any problem!

I can only hope this is due to the same problem as was fixed in
bug#44521.  If not, let's hope someone will come up with a
reproducible recipe in the future.

> Also what happens:
> - Sometimes the letters don't have the correct form: a middle form for an ending letter 
> - Sometimes the letters are disconnected as in bug#44521.

I attach below the images you sent, so that they are stored with the
discussion: