I think this is a newish thing and not sure if it's related to Start11. On my taskbar when I right click a program the close button says "Close all Windows on this Display." I am used to right clicking taskbar items down there to close them, but if I have, say, two or four Chrome windows open and click that, it closes all the Chrome windows, whereas it used to only close the one. If I open the window and hit the X in the top right, it only closes that window, as expected.
I would like to be able to right click a window on the taskbar and close only that window, but I don't see an option for it anymore. I've been accidentally closing down things I need to leave open like crazy. Is this something hidden within Windows somewhere or a feature that Stardock could consider?