TabItems in swiftUI do not scale

I have a TabView with a sample tabItem as follows: .tabItem {

            Label ("Import", systemImage:"doc.on.doc")
                .accessibilityLabel("Import Text")
             
        }

But accessibility settings for large display size on does not seem to work, nor do dynamic font sizes: .tabItem {

            Label ("Import", systemImage:"doc.on.doc")
                .font(.largeTitle)
                .accessibilityLabel("Import Text")
             
        }

The tabItems appear as a fixed size. The tab contents scale well, so this does not look pleasant at all.

Is this a known bug in SwiftUI?