Android Context Menu Back Button -

: The context menu is treated as a temporary "top" layer. The system intercepts the Back event to pop this layer off before it affects the underlying activity or fragment.

: It provides a non-destructive way to exit a menu without accidentally clicking a menu item. Android Context Menu Back Button

: In complex apps with sub-menus, sometimes the Back button closes the entire menu tree instead of just the last sub-menu, which can be frustrating. : The context menu is treated as a temporary "top" layer