SwiftUI different behavior on different iOS versions - ios

Question

I have been developing an app with minimum iOS 13, but whole development process was done on iOS 15. Now when testing the iOS 13 devices, I noticed some problems.
Minimalistic example: You have a list of items, where each item contains leading icon, with a title and a subtitle vertically stacked. To adapt to various screen sizes, I attached a .minimumScaleFactor() to the texts so they would scale down when needed. That's working nicely on iOS 15. After a whole lot of testing, it also works on iOS 13.4 that is the oldest where I've got it working, so, iOS 13 - <13.4 is in question here.
On the screenshot you can see iPhone 8 13.3 vs iPhone 8 13.4, the text is scaled down even when there is space available. On iPhone 6s Plus 13.3 there is even more available space (screen size).
And the code:
struct Viewwww: View {
var title = "This is a title This is a title This is a title This is a title This is a title "
var subtitle = "This is a subtitle This is a subtitle This is a subtitle This is a subtitle This is a subtitle "
var body: some View {
VStack{
Text("Onboarding test").font(.title).multilineTextAlignment(.center).lineLimit(2)
Spacer()
buildItem()
buildItem()
buildItem()
buildItem()
buildItem()
Spacer()
}.padding(.horizontal, 20)
.padding(.top, 30)
}
#ViewBuilder
func buildItem() -> some View {
HStack(alignment: .top, spacing: 20){
VStack {
Image(systemName: "pin").resizable().scaledToFit().frame(width: 44, height: 44)
}
VStack(alignment: .leading, spacing: 10){
Text(title).font(Font.title).minimumScaleFactor(0.5)
Text(subtitle).font(Font.body).minimumScaleFactor(0.5)
}
Spacer()
}.frame(maxWidth: .infinity).background(Color.red)
}
}
So anyone has experienced this, and can help? Thank you!