I just noticed that the same issue appears while using Inkscape: open the export dialog, export the image and close the dialog. Then you will still see two dots in the dock near the inkscape icon. And if you quit Inkscape, on dot remains and ALT-TAB doesn't work anymore.
I just noticed that the same issue appears while using Inkscape: open the export dialog, export the image and close the dialog. Then you will still see two dots in the dock near the inkscape icon. And if you quit Inkscape, on dot remains and ALT-TAB doesn't work anymore.