GrabCAD Groups Feedback

I have no problem using groups on the ipad. However the smallish iphone 5s is difficult to use when replying to groups posts. The text entry seems fixed to a size larger than the screen in portrait and landscape orientation. In landscape the interface is swallowed up by the keyboard. Once you get past a few words you are typing in the blind and its not possible to scroll around to find out what you are typing. This occurs in both safari and chrome, latest iOS. Composing the initial post of a thread seems to work ok.

Thanks