OS X 10.13.6 - upgrade to TB 68.2.1 changes UI font

User Help for Mozilla Thunderbird
Posts: 4
Joined: December 21st, 2013, 2:22 pm

Post Posted November 4th, 2019, 9:29 am

I am running OS X 10.13.6 and I just upgraded to Thunderbird 68.2.1 (from a pre-68 release). As a consequence the default "folder sidebar" font and the display font in the Preferences menus have changed to a larger font size. But it seems the fonts in the Accounts Settings tools are unchanged. Any thoughts as to why that happened? It is not a fatal error, but it is annoying. And AFAICT there is no preference menu to change this font back to what it was before.

Posts: 3689
Joined: February 3rd, 2009, 6:29 pm

Post Posted November 4th, 2019, 10:37 am

Try this:

Code: Select all
/* Thunderbird userChrome.css */

@namespace url("");

#folderTree {
  -moz-appearance: none !important;
  background-color: pink !important;
  font: sans-serif !important;
  font-size: 3mm !important;

Code: Select all
/* Thunderbird userContent.css */

@-moz-document url-prefix("about:preferences"),
url-prefix("chrome://messenger/content/preferences/aboutPreferences.xul") {
  #preferencesContainer {
    -moz-appearance: none !important;
    background-color: orange !important;
    font: sans-serif !important;
    font-size: 3mm !important;

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