Sidemenu: Shadow disappeared for iOS 13

[skatolyk]

Describe the bug
Shadow disappeared on the top most view after I have updated to Xcode 11 and iOS 13.

Here is my code where I set onTopShadowOpacity to have shadow. Other values I don't touch at all.

let sideMenuNavigationController = SideMenuNavigationController(rootViewController: vc) sideMenuNavigationController.isNavigationBarHidden = true sideMenuNavigationController.menuWidth = UIScreen.main.bounds.width - 50 sideMenuNavigationController.statusBarEndAlpha = 0 sideMenuNavigationController.presentationStyle.onTopShadowOpacity = 0.7

P.S.: Before update all worked fine.

[jonkykong]

Fixed in 6.4.1