UIKeyboardWillHideNotification

I noticed that with 14.5 beta (4,5) when moving first responder between two text fields I get keyboardwillhide notification followed by keyboarddidhide notification but the keyboard is obviously still on-screen and there no keyboardwillshow notification either

in both cases the notification user data shows no movement

    UIKeyboardFrameBeginUserInfoKey = "NSRect: {{0, 508}, {390, 336}}";
    UIKeyboardFrameEndUserInfoKey = "NSRect: {{0, 508}, {390, 336}}";