xanderfrangos/twinkle-tray v1.13.6 on GitHub

Fixes:

Hopefully fixed multiple issues related to monitor detection at startup and after monitor changes.
Potential improvements to responsiveness after resuming from sleep mode and at startup.
Fixed issue where overlay wouldn't always hide itself.
Improved error handling on startup.
Reduced background CPU usage on low-end hardware.
Updated localizations for several languages.

New features & improvements:

Moved WMI + DDC/CI communication to another thread. Opening and interacting with the brightness flyout should now be more responsive.
Improved handling of Windows theme changes (thanks, @Seo-Rii!).
Twinkle Tray will attempt to restore your last brightness settings after the PC wakes from sleep or hibernation.
Restored Theme option.
The brightness flyout will no longer animate if animations are disabled in Windows.
Brightness can now be controlled from the command line. See the readme for details.
The last known brightness will now be restored at app startup. This can be turned off in the settings.
Added command line flag to show overlay.
When "link levels" is active, all displays will be combined into one slider.
Improved handling of laptops/tablets when the internal display is off.
Improved reliability of DDC/CI communication.
Reduced slider judder in the flyout/overlay.
Updated localizations for several languages.
Added support for hidden taskbars.
Added support for taskbars on non-primary displays.
Added support for new Fluent UI icons (Windows build 21327+).
Fixed potential vulnerability (CVE-2021-28119).

Fixes:

Potentially improved error handling when DDC/CI temporarily breaks connection.
Improved handling of hotkeys assigned to disconnected displays.
Multiple instances of Twinkle Tray will now be prevented.
Scheduled brightness should now correctly take effect after waking up from sleep or hibernation.
Fixed hotkeys for all monitors and turning off displays not functioning.
Theme overrides now override colored taskbar.