It's funny you should say that, because the next release apparently directly addresses this. Including startup to tray. https://support.mozilla.org/en-US/kb/clo

It's funny you should say that, because the next release apparently directly addresses this. Including startup to tray. https://support.mozilla.org/en-US/kb/close-tray-starting-154 https://support.mozilla.org/en-US/kb/close-tray-starting-154