Existing instance of TV not showing on taskbar

After my PC starts up, I click on the TV icon, but I get a message that TV is already running, and I get a choice to cancel or go to the existing running TV app. 

In the past, I never got this dialog. I would click on the TV icon and it would start TV in a new window and I could then click on the computer I wanted to remote access. What has changed? How can I avoid needing to do this extra click?