I don't have blocklist enabled i assume neither have any custom rules so it's a bug? Disable notification seems to work but if it should be fixed because the average user will not bother figuring out the issue when it's spammed by alerts and will uninstall.
It's a firewall how would it do that and lets say it did it and you uninstall there would no longer be any wfp filtering so it wouldn't keep creating an issue? Most probably your problem is in some other place.
Did you check what is using cpu?
