Open New Window opens a previoius old window with all of the previous open tabs
I'm running Windows 10 and Firefox with latest updates. With Firefox closed, when I right click on Firefox icon and select Open New Window a previous session window with whatever tabs were open is opened. This happens even if in the previous session I opened a new window, then closed all other windows, and then closed the single tab new window. This seems to have begun happening about 2 or 3 updates ago.
I'm running Windows 10 and Firefox with latest updates. With Firefox closed, when I right click on Firefox icon and select Open New Window a previous session window with whatever tabs were open is opened. This happens even if in the previous session I opened a new window, then closed all other windows, and then closed the single tab new window. This seems to have begun happening about 2 or 3 updates ago.