When the TextField has focus and an external keyboard is connected - there's a system bar with quicktype suggestions and a button to open the virtual keyboard at the bottom of the screen. That's what I was referring to. It disappears when the TextField loses focus.
AvayaAppleDev
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Also - TextField works perfectly for me for all use cases except the iPad external keyboard "return" key. With "axis: .vertical" and ".lineLimit(1...4)" like this....
TextField("", text: $typingMessage, axis: .vertical)
.lineLimit(1...4)
The field does exactly what I need on iPhone and iPad. EXCEPT of course for the iPad external bluetooth keyboard which dismisses focus from the TextField when the user hits "return" or "shift+reeturn".
No no - an external bluetooth keyboard on an iPad. When I say "dismissed" I mean 2 things. First - the cursor leaves the TextEdit field. 2nd - the on screen indicator at the bottom of the iPad screen that shows the connection with the external keyboard goes away.