I believe I have also experienced this. If you click the stop all traffic button it will switch the firewall to “Block All” everything normal.
However, when click the restore button it stays on “Block All”.
One thing I noticed is that if you click the stop all traffic button, open up the advanced firewall settings click, “OK” and then try to restore the network traffic, CIS fails to change it back to “Safe Mode” or whatever you have it set to.