4.6 inputfield strange behaviour after submit

I created three UI inputfields to test an issue I'm having after pressing enter.

Added by GameObject -> UI -> Inputfield

I placed them in their own positions on the screen in screen space - overlay.

When I click the first field, enter some text and then submit with enter some strange behavior occurs.

It seems sometimes the same field will still accept more text, sometimes it will pass the focus to another inputfield and sometimes it will stop accepting text for a few seconds and then upon pressing the mouse clicked anywhere else in the scene it will pickup keypresses in the text field again.

Is this a bug?

How do I prevent this?