What does the Fix „Connection blocking feature is missing in Firewall“ exactly mean in 8.8.0?

Hi, I just got version 8.8.0 and looked up the release notes. I would like to know if „Connection blocking feature is missing in Firewall“ meant that the Firewall did not block connections when the popup showed up to ask to allow or block a connection attempt. Or did that work? I would really like to have additional information here to better understand what risk this bug posed. Because a Firewall that lets everything through, is not a Firewall.