How to find out what "Unknown" program is in the dock

by hayavuk   Last Updated January 13, 2018 21:02 PM

I see a program called "Unknown" as an icon in the dock and not sure what it is. I wasn't paying attention when it appeared but I cannot switch to it or close it using the context menu. How do I find out what this program is?

screenshot of the Unknown program icon in the dock

Not sure if it matters but this happened under Wayland. I haven't tried X.

Tags : gnome 17.10

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