When is appropriate to include buttons and or swipe command in a Responsive Design off-canvas layout?
While doing some Responsive Web Design research for sites using the off canvas navigation technique, I have noticed a level of inconstant in closing these menus.
Example: Facebook off-canvas menu is access by click/touching the menu button but not does not provide a close button or a swipe to close gesture. The user simply is expected to know they must touch the main feed to close the menu.3
Example: Google on the other hand require click/touch to menu button to upen, but to close requires the user to swipe close, or click/tap the main content section to close.
In both cases it seems to create a poor user experience because the user is left with no obvious way of getting back. Is this affordance of including a static button for closing these menu simply not high/important enough?