Firefox should not tell the window manager to put the window at (0,0) at the request of javascript, because with the width and height set ust right this triggers the "legacy fullscreen support" feature of some window managers like compiz and wmii (something javascript should not be able to do.)
Suggested fix: when javascript requests to set the windows Y coordinate to 0 set it to 1 instead.
Firefox should not tell the window manager to put the window at (0,0) at the request of javascript, because with the width and height set ust right this triggers the "legacy fullscreen support" feature of some window managers like compiz and wmii (something javascript should not be able to do.)
Suggested fix: when javascript requests to set the windows Y coordinate to 0 set it to 1 instead.