Scroll view when keyboard displays? (revisited)

This was posted and discussed a few weeks ago. I am finding a problem with this working in landscape orientation.

If a text field is on a view and it would be covered by the keyboard, the view will scroll the contents up so the textfield stays visible when the keyboard displays. This works fine in portrait mode.

If I rotate the device and tap in the field, the view does not scroll and the textfield is hidden by the keyboard.

Could I be doing something wrong? Or is this a bug I should report?