When uninstalling one gets a popup saying the product is already installed and the uninstallation process is then aborted.

The workaround is to edit the Windows registry to remove the two entries below.

If on a 64-bit Windows:
HKEY_LOCAL_MACHINE > SOFTWARE > Wow6432Node > JavaSoft > JavaFX Scene Builder
HKEY_LOCAL_MACHINE > SOFTWARE > Wow6432Node > Oracle > JavaFX Scene Builder

If on a 32-bit Windows:
HKEY_LOCAL_MACHINE > SOFTWARE > JavaSoft > JavaFX Scene Builder
HKEY_LOCAL_MACHINE > SOFTWARE > Oracle > JavaFX Scene Builder


From there the product removal will succeed.