When I click on the Gmail button in the Google homepage (top corner on the right of the screen) (I use Firefox and Windows 8.1) I find that, if I click on "Open Link in New Window" in the dropdown menu, the screen will display the gmail page only very briefly, for as soon as I go to COMPOSE, the page reverts to the Google homepage ! Very frustrating!

How to get to the Gmail page straightaway without the above inconvenience please?

Many thanks (in my own native tongue: " Grazzi " (thanks) "hafna" (a lot).

Joe