bug#36030: Changing the region or the point changes the way characters are displayed

[Clément Pit-Claudel]

On 2019-06-06 10:18, Eli Zaretskii wrote:
>> Cc: 36030@debbugs.gnu.org
>> From: Clément Pit-Claudel <cpitclaudel@gmail.com>
>> Date: Fri, 31 May 2019 16:51:10 -0400
>>
>>> I see none of that in "emacs -Q".  I also don't understand how
>>> resizing the frame could cause these effects.  If the recipe is more
>>> complicated than just copy/paste the strings you show into *scratch*,
>>> please be sure to show the whole recipe.  E.g., where did the face
>>> properties come from?
>>
>> This is python-mode's syntax highlighting.  Unfortunately, I don't have a 
>> reproducible recipe for these issues yet; they happen on my machine, but I 
>> have many custom fonts and Emacs customization here.  I will try to find a 
>> recipe.
> 
> Could you please try the latest master and see if these problems are
> solved?  If not, could you please try applying the patch I posted in
> bug#28312, and see if that fixes your problems?

I think it might fix part of the problem, but I still see some flickering and 
font changes.
I'm still working on finding a repro.
Thanks a lot for your help.