Bottom sheet is not covering screen

[vraj-s-shah]

I have used this code to present the bottom sheet

let optionMenuVC = OptionMenuViewController.instantiate(from: .main)
let sheetOptions = SheetOptions()
let sheetController = SheetViewController(controller: optionMenuVC, options: sheetOptions)
navController.present(sheetController, animated: true)

But this doesn't open the bottom sheet completely. It opens partly and when I drag it above it then comes back to its original place and I cannot interact with the UI. How to make this bottom sheet cover screen according to content