Pan gesture not working correctly

[Y2JChamp]

Hi,
i'm facing the following issue:
When the menu is revealed (left menu) i swipe it to right again and it loses its anchor an its x position becomes greater than zero.
For this i have made a change to the library:

override func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
        if let panGesture = gestureRecognizer as? UIPanGestureRecognizer, isMenuRevealed, panGesture.velocity(in: view).x > 0 {
            return false
        }
        return super.gestureRecognizerShouldBegin(gestureRecognizer)
    }

The same issue occurs when tapping on the button that calls the revealMenu and at the same time swiping right.