Hi, Alan. It was disabled due to the bug in macOS Catalina builds.
I’m also confused by why ICON_BADGE_NUMBER is not supported on macOS 10.15.6 in JDK 15, as the underlying OS issue reported in JDK-8230869 has been fixed. It works fine from JDK 12.
I have tested the "DockBadge.java" from the https://bugs.openjdk.java.net/browse/JDK-8230869 on macOS 10.15.7 + JDK12 and it does not work =( -- Best regards, Sergey.
