I just found out that you can hold option key while clicking on the wireless icon in OSX to get more details.
* mind blown *
Now you'll spend your next hour option-clicking random stuff. Sorry.
Most irritating for me is if all windows of an app are hidden (minimized), simple Cmd+Tab doesn't brings anything to focus, but some gymnastics with Option and voila now you can see your Slack.
I hope it continues to be useful to you!