keep in mind, Fluid restores pages from the previous time you quit the
app. also with the 'closing the last window only hides the window'
option turned on in preferences, you can sometimes have a hidden
window open without realizing it (basically, it's a bit buggy).
so it's possible to quit a Gmail SSB when there's a hidden blank
window. when you restart you will see a single window that is blank.
the solution to this is to type the "home" keyboard shortcut : command-shift-H
this will take you to the Gmail interface. then maybe quit the app
immediately and restart it to make sure it opens to Gmail home on the
also, if this doesnt work as expected, try turning off 'closing the
last window only hides the window' and repeat.