[PageVisibility] ALT+TAB behaviour

hi, i need some help with this issue i posted in stackoverflow:
https://stackoverflow.com/questions/28993157/visibilitychange-event-is-not-triggered-when-switching-program-window-with-altt

basically, i can reproduce in windows/osx in several browsers.

the thing is the event triggers as expected when i minimize/restore the
browser window, or if i switch between tabs inside the browser. but it does
not trigger if i ALT+TAB to a different program, or if I click in a
different program in the taskbar, or even if i click the windows key to
open the start menu, which covers the whole screen.

is this part of the spec?

please help me, any information will be appreciated.


thanks,


Andres Bolocco