In this case, it might be that you are using the same variable twice. That could mean you are activating isPresented from 2 locations in your code. If you change your code to use 2 separate variables, it shouldn't crash. For example, use $showView3FromView1 and $showView3FromView2 in their respective views.

I tried adding those print statements to onAppear and onDisappear for the view that was being navigated to, but neither printed.

I found the same thing... breaks in the simulator, but runs well on a device.