When i started latest version of Fiddler, i started to get an error window at launch saying "Failed to register Fiddler as the system proxy"
But as usual, i have plenty opened windows at the same time.
While i'm doing a search for a solution, Fiddler and the error window goes to background.
But when i come back to Fiddler, i'm unable to exit the application.
The error windows is not referenced in the taskbar and it's a pain to find it.
The best solution is to go to desktop "Win+D" and focus on Fiddler to get the splash screen and the error window visible again.
Once the error window closed, i can close Fiddler.
The issue is the error window staying on background and not having an entry in taskbar.