Hi, Jonas here!
Or as we say in the north of Germany: "Moin Moin!" I am a Microsoft Customer Engineer (CE formerly known as PFE) and a while back (years in fact) I was asked to analyze the update ...
Monthly latest CU is deployed and installed, same for Feature Update. When I deep dive to the last report for device that includes all the installed and required updates, it shows me that only PMCP are not installed since they showed up after ADR run as per schedule. Before they were release by PMPC Current Rollout was showing 90% (so I have seen in it in a correct state), since the latest CU and 3rd party patches for PMPC were installed as expected. Problem arise few days after once new updates are added by PMPC. So to Current Rollup includes 3rd party ADR, maybe it considers it as a normal deployment of Updates even though they are 3rd party. Below you can see Device report. I'm looking forward to new release where you will be able to select deployment. Thanks in advance.