Stealth port wizard does not save settings

When I go to Firewall → Common Tasks → Stealth ports wizard and choose any other option than the most upper one and click apply it doesn’t save settings.

I tried to adjust rules for eMule and noticed that I have to do this every single time when I like to use it in order to get high id:

“Go at Firewall → Common Tasks → Stealth ports wizard and choose
Alert me to incoming connections- stealth my ports on a per-case basis”