Impossible to determine when Teams is the active application
It is not possible to determine when the Teams app (Windows) is selected for input / is the main focus application. The app's toolbar doesn't change colour when it is in the background / another app is selected.
This is annoying. Please consider fixing this. Thank you!
Sean Ellis commented
This is a standard platform UI guideline. Once again, Microsoft are one of the worst offenders for ignoring the rules that are meant to make life easier for us, the users.