In WPF (or Desktop) I have been able to connect to an application using the new Connect to Application Step, but then when I try to reconnect back to the original running application and run additional steps, it does not find the elements, and still thinks it is connected to the 2nd application that i connected to.

Example:

Running Test on App A,
Connect to App B and run more steps
Connect back to A to run steps, and the next step fails with an error that it couldn't find the element in App B.