1647340 - Switching between standard themes doesn't affect all areas

Status: RESOLVED DUPLICATE of bug 1529323

(Thunderbird :: Theme, defect)

Description

[Andreas]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.106 Safari/537.36 Edg/83.0.478.54

Steps to reproduce:

1. case: Have Thunderbird theme set to default. Switch the OS settings (in my case Windows 10) to either dark or light mode.
2. case: Have the OS setting set to dark mode. Select the light Thunderbird theme (or vice versa).

Actual results:

1. case: Working as expected, all areas of Thunderbird are either set to dark or light.
2. case: Some areas (message pane (but not message header pane), options, account settings, add-ons manager...) follow the color scheme of the OS rather than that of the current theme and remain dark with a light light theme on a dark mode OS (or vice versa).

Expected results:

Those areas listed above should inherit their color from the theme, not from the OS setting.