Yes, I make heavy use of those features! But things always seem to look different on the actual devices; if I enter my iPhone's resolution into that thing on Chrome on my PC, it doesn't look the same. It seems as if mobiles have a much higher resolution than they actually do, or something, though I don't know the technicalities.
Do you have sidebars open or not use fullscreen? Those are the only reasons I can think of for why you'd supposedly have that resolution! 864 vs 1080 sounds like it's accounting for the header (tabs etc) at least.
Do you have sidebars open or not use fullscreen? Those are the only reasons I can think of for why you'd supposedly have that resolution! 864 vs 1080 sounds like it's accounting for the header (tabs etc) at least.