TextInput Component not displaying

Since the latest update (20.0) I've been having problems with the TextInput component.
Initially in my pre-existing projects, I was getting the error:
Uncaught TypeError: Cannot read property 'css' of null
Which was being triggered from both lines 171 and 176 of anwidget.js
On closer inespection I could see that #dom_overlay_container was empty.

So I tried this with a blank animate project.
I create a textInput component on stage and publish and it displays, but place this on any other frame other than the first frame, and it doesn't display.
Similarly if you place the textInput across multiple frames, it disappears after the first frame, and the #dom_overlay_container is empty.

Any thoughts?