In version 1909 applications are no longer pre-cached. For applications without isolation group, the application is started.
For application with isolation group, the isolation group is not loaded and as a result the application cannot be started. If the Broker Agent on VDA is restarted then the applications are loaded correctly.
Note:- In the previous version (1903) applications are pre-cached in the folder used for App-v Cache and the applications are immediately available for end users.
Broker Agent Services doesn't check if App-v Services is Started or not