1432544 - Firefox 59 incorrectly renders certain fonts: bad kerning

Status: RESOLVED DUPLICATE of bug 1430446

(Core :: Graphics: Text, defect)

Description

[Artem S. Tashkinov]

Attachment: Menus in Firefox 59 beta

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:57.0) Gecko/20100101 Firefox/57.0
Build ID: 20180118122319

Steps to reproduce:

Updated to Firefox 59 beta 3.


Actual results:

Fonts in menus and in the address bar are broken: bad kerning, strange fonts.

Other areas look unaffected: the About dialog, the preferences.

I'm running the official Firefox 59 beta 3 from here: https://ftp.mozilla.org/pub/firefox/releases/59.0b3/linux-x86_64/ on top of CentOS 7 64.

Comment 1

[Jonathan Kew [:jfkthame]]

The poor spacing is probably the same issue as bug 1430446.

If there's something else wrong besides the glyph spacing (e.g. the wrong font?), we'll need more detail -- what font is supposed to be used, what is being used instead?

Comment 2

[Artem S. Tashkinov]

Attachment: Font rendering Firefox 58 vs 59

Web pages are also affected, I just didn't notice it.

Comment 3

[Artem S. Tashkinov]

As far as I can tell, the same fonts are used in both versions - it's just the kerning and gamma which are different.

I use Microsoft core fonts (Tahoma, Verdana, Aria, Times New Roman, etc) as system fonts wherever possible.

Comment 4

[Artem S. Tashkinov]

This has never been an issue earlier and Firefox 59 looks like a huge regression.

This is my ~/.fonts.conf

<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>
 <match target="font" >
  <edit mode="assign" name="lcdfilter" >
   <const>lcdlegacy</const>
  </edit>
  <edit mode="assign" name="hinting" >
   <bool>true</bool>
  </edit>
  <edit mode="assign" name="hintstyle" >
   <const>hintfull</const>
  </edit>
  <edit mode="assign" name="rgba" >
   <const>rgb</const>
  </edit>
 </match>
</fontconfig>

My freetype 2.4.11 library is built with this option:

#define FT_CONFIG_OPTION_SUBPIXEL_RENDERING

Comment 5

[Jonathan Kew [:jfkthame]]

The patch in bug 1430446 will probably fix the spacing problem you're seeing.

I don't know about changes in gamma handling (though from the screenshot, that looks much less glaring than the spacing glitch). Maybe Lee knows of something that could have affected it?

Comment 6

[Artem S. Tashkinov]

Discard my comment about gamma: that were two different Firefox sessions open and Google decided to use different colors for search results.