With iOS 7, Apple introduced a new navigation gesture where you can swipe to the right from the left edge of the device to close a sub window within a navigation controller (NavigationWindow, TabGroup). This feature is enabled by default.
Currently, there is no way to disable this on Titanium except for a workaround of using a custom leftNavButton. While this works, it is not ideal for all situations, and a property to toggle this feature would be better.
There's a solution posted on stackoverflow that could potentially be used to expose a new property on the Ti Window control:
In our particular case, we need to disable this gesture on some windows that have ScrollableViews within, as it can interfere with swiping for those views.