Dummies including BetterDummy is now intentionally skipped from controlling displays (Display.isDummy checks).

Virtual Displays (like Sidecar, Airplay, DisplayLink displays) that support only shade control are banned from control when in mirrored setups (DisplayManager.isDisqualifiedFromShade).

Each of these factors are prohibiting BetterDummy mirrored Virtual Displays to benefit from shade based dimming.

An exception must be implemented to solve this issue.