My expectation with the code below is that when a button is tapped, a sheet should appear showing the relevant text.

The issue I'm having is that whichever button is tapped first, when the sheet appears it shows an empty string rather than the updated overlayText value. Dismissing the sheet and tapping the same button has the same result but when I tap a different button, everything starts working as expected.

It seems like SwiftUI is creating the sheet before the overlayText is updated and then ignoring that first update. Does anyone know how to get it to update to the correct info?

I'm still pretty new to Swift (I'm up to day 36 of the 100 Days with SwiftUI course) so I'm hoping this isn't something glaringly obvious. I came across this issue in a bigger app that I was building and was able to replicate it in this simplified example.

import SwiftUI

struct Overlay: View {

    var text: String
    var body: some View {
        Text(text)
    }
}

struct ContentView: View {

    @State private var overlayShowing = false
    @State private var overlayText = ""

    var body: some View {
        Form {

            Button("Button 1") {
                overlayText = "Button 1 was tapped"
                overlayShowing = true
            }
            Button("Button 2") {
                overlayText = "Button 2 was tapped"
                overlayShowing = true
            }
            Button("Button 3") {
                overlayText = "Button 3 was tapped"
                overlayShowing = true
            }
            .sheet(isPresented: $overlayShowing) {
                Overlay(text: overlayText)
            }
        }
    }
}

Thank you so much @Hatsushira. That did the trick and fixed things in the project I was working on too. I still have a lot to learn about bindings and property wrappers…