I took the icns file from the latest beta dmg, opened it in the Preview app on macOS Catalina, and exported it. It grew from 26Kb to 44KB, but it fixes the glitch in Finder, Spotlight, Activity Monitor etc.
Adding build/icon.icns makes electron-builder use it for macOS builds.
Resolves #275.
I took the icns file from the latest beta dmg, opened it in the Preview app on macOS Catalina, and exported it. It grew from 26Kb to 44KB, but it fixes the glitch in Finder, Spotlight, Activity Monitor etc.
Adding
build/icon.icns
makes electron-builder use it for macOS builds.Before:
After:
Exporting the icon: