There are a number of upstream bug reports for incomplete dark theme support, see this meta bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1720770.
** Summary changed: - Thunderbird 91 does not honor the dark theme + Thunderbird 91 does not fully honor the dark theme ** Summary changed: - Thunderbird 91 does not fully honor the dark theme + [upstream] Thunderbird 91 does not fully honor the dark theme ** Tags added: upstream ** Bug watch added: Mozilla Bugzilla #1720770 https://bugzilla.mozilla.org/show_bug.cgi?id=1720770 ** Also affects: thunderbird via https://bugzilla.mozilla.org/show_bug.cgi?id=1720770 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to thunderbird in Ubuntu. https://bugs.launchpad.net/bugs/1958972 Title: [upstream] Thunderbird 91 does not fully honor the dark theme Status in Mozilla Thunderbird: Confirmed Status in thunderbird package in Ubuntu: New Bug description: Description: Ubuntu 20.04.3 LTS Release: 20.04 thunderbird: Installed: 1:91.5.0+build1-0ubuntu0.20.04.1 Candidate: 1:91.5.0+build1-0ubuntu0.20.04.1 After the upgrade to Thunderbird 91, the dark theme settings are not honored in several places: * when reading an email message (either in the bottom right corner panel, or when opening a message in its own tab/window) * in the preferences These areas are "black on white" (light theme) rather than following the system settings (dark theme). The rest of the application is using dark theme. Going into Preferences -> Language & Appearance -> Colors has "Use system colors" selected by default. Also, it has "Override the colors specified by the content with my selection above" set to "Always". ANY SELECTION OF THESE TWO PARAMETERS IS BROKEN: * As I said, choosing "Always" + "Use system colors" means that Preferences + Emails are in light theme. * "Never" + "Use system colors", then the Preferences page uses the correct dark theme. The emails still appear in a light theme. * "Never" + UNSET "Use system colors", and force a white on black (dark) theme, then the preferences are in the correct dark theme (not the one forced, but the system one). The emails will appear white on black (the one forced), which is still wrong, as the system dark theme isn't black. However, if an email forces black text (e.g. HTML body), then it becomes unreadable (black text over black background). * "Always" + UNSET "Use system colors", then Preferences are in dark theme (but the one I forced, not the system one), email bodies are white on black (again, the one I forced), but any color information from the email is overridden. An HTML email with the usual "my replies are in red" won't have any red text. This is a clear regression from the earlier version of Thunderbird where all of this worked perfectly. To manage notifications about this bug go to: https://bugs.launchpad.net/thunderbird/+bug/1958972/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
