The new Firewall pop-up options are great. However, the Firewall UI is not good.
When we delete a Firewall App rule, the UI takes a long time to recover causing Avast to hang. When it hangs, the Avast interface and Settings hangs and protection is also disabled until the UI recovers.
Also, after PC restart, the Firewall pop-up takes a long time to start up for new app because Avast has not fully loaded due to the UI being slow.