Settings page: Checkboxes not displayed

Summary

On the settings page, the checkboxes in front are not displayed, so it is not possible to see, if an option is on or off: Screenshot_from_2021-10-30_11-08-55

Steps to reproduce

  • Open the settings page

Versions

Thunderbird version: 78.13.0 (64-bit) Markdown Here Revival version: 3.2.9 Operating system: Linux