Hinting regression in Ubuntu 23.04

[Martin van Es]

Hi,

Ubuntu 23.04 has a regression in hinted font rendering and possibly RGB 
subpixel rendering. I already tried replacing libfreetype with the last known 
good version of 22.10 and compiled 2.13.0 to see if that made any improvements 
but it didn't (as far as I can tell).

I do understand that distro specific issues are not FreeType's concern but 
both Ubuntu developers and other contributors to the issue (including me) are 
failing to understand what's happing and why e.g. MS's Verdana is rendered 
using perfect hinting?

Could anyone knowledgeable about font rendering and hinting have a look at 
this issue?

https://bugs.launchpad.net/ubuntu/+source/fonts-ubuntu/+bug/2017573

Best regards,
Martin