If the app type is incomplete then the traffic is touching a different rule, as there isn't enough traffic to make an identification before it's dropped or the session is killed.
Are you blocking the app QUIC at the top of your rule hierarchy? You may want to consider that, as it sometimes muddles App-ID from time to time for web browsing traffic.
Click Accept as Solution to acknowledge that the answer to your question has been provided.
The button appears next to the replies on topics you’ve started. The member who gave the solution and all future visitors to this topic will appreciate it!
These simple actions take just seconds of your time, but go a long way in showing appreciation for community members and the LIVEcommunity as a whole!
The LIVEcommunity thanks you for your participation!