IphoneX simulator closing popovers when I interact with them - swift

Question

I'm having a problem with the iPhone X simulator in Xcode behaving differently to other simulators.
What I'm trying to do it click on a view which brings up a UIPicker. When a date is selected and the user clicks ok the popover disappears and a label in the view is updated with the string of what was selected. This is working on the 2 physical devices I'm using (iPhone6 plus and iPad). It's also working in simulators for iPhone 5 and 8. However when I try the iPhoneX it doesn't work.
As soon as the user the taps the picker or moves it it fades of the screen and nothing gets updated. As I don't have a physical iPhoneX to test with I don't know if this is just a simulator issue or if it will also happen on an actual device. Is this just a simulator issue? How can I fix this? Will this also happen on an actual device?
Below is the function I'm using to display the custom popover containing the picker view.
/// When the view is tapped it will display user options and then update the label in the view.
///
/// - Parameters:
/// - box: LabelAndWhiteBarView is my own custom UIView for this project.
/// - strings: array of strings to be displayed by the picker
func displayStringPicker(box: LabelAndWhiteBarView, strings: [String]){
// Custom viewcontroller containing a UIPickerView, title UILabel and a cancel and OK UIButton.
let floatingPickerViewController:FloatingPickerViewController = UIStoryboard(name: "FloatingPickerStoryboard", bundle: nil).instantiateInitialViewController()! as! FloatingPickerViewController
floatingPickerViewController.modalPresentationStyle = .popover
floatingPickerViewController.preferredContentSize = defaultPickerSize // set elsewhere so it doesnt cover the whole screen
//Adds a blank string in front of each array so the user can always pick and empty option
var stringsWithBlankFirstOption = strings
stringsWithBlankFirstOption.insert("", at: 0)
floatingPickerViewController.stringArray = stringsWithBlankFirstOption
//tells the picker view which view to update
floatingPickerViewController.senderBox = box
floatingPickerViewController.delegate = self
floatingPickerViewController.view.layer.borderWidth = 1
floatingPickerViewController.view.layer.borderColor = UIColor.clear.cgColor
let popoverMenuViewController = floatingPickerViewController.popoverPresentationController
popoverMenuViewController?.permittedArrowDirections = UIPopoverArrowDirection(rawValue:0) // removed the arrow thats defauls on a popover
popoverMenuViewController?.delegate = self
popoverMenuViewController?.sourceView = self.view
popoverMenuViewController?.sourceRect = CGRect(
x: 0,
y: 0,
width: self.view.frame.width,
height: self.view.frame.height)
floatingPickerViewController.dismissBlock = {
self.dismiss(animated: false, completion: nil)
}
present(
floatingPickerViewController,
animated: false,
completion: nil)
/// set the picker to preselect what was already selected
let indexOfSelectedItem = floatingPickerViewController.stringArray.index(of: box.displayLabel.text ?? "") ?? 0
//pre selects the last selected string
floatingPickerViewController.numberPicker.selectRow(indexOfSelectedItem, inComponent: 0, animated: false)
}