I am currently using FireTray addon which has the option to minimize firefox to tray upon close action.
But when I have put the "close Fx Window" as close button action, the window is closed rather than minimized to tray.
It could be because the FireTray is unable to detect the "Fx Window close" event.
So, add the option to minimize Firefox to tray.
The minimize to tray option must also work in Linux desktops and not just Windows. FireTray is working on Linux too.
I am currently using FireTray addon which has the option to minimize firefox to tray upon close action. But when I have put the "close Fx Window" as close button action, the window is closed rather than minimized to tray. It could be because the FireTray is unable to detect the "Fx Window close" event. So, add the option to minimize Firefox to tray.
The minimize to tray option must also work in Linux desktops and not just Windows. FireTray is working on Linux too.
P.S: I am using Linux Mint 18.2 Xfce.