I was able to accomplish this by hiding the toolbar, but it might not be a solution for every case since it will make it disappear:
NavigationSplitView(columnVisibility: $columnVisibility) {
VStack {
...
}
.toolbar(.hidden, for: .navigationBar)
} detail: {
...
}
Hope it helps!
Topic:
UI Frameworks
SubTopic:
SwiftUI
Tags: