I can confirm the focus bug, though I am not sure what is triggering it. It may be a timed blur or render event for one or more of the UI elements updating. Might need some more research to hunt down the source.
As for the input turning white, I think it may be due to the style sheet not loading properly on your end because it shows up fine on my end. In your screenshot, I can see the text font and alignments are slightly off. Make sure your game is fully loaded and your browser/device is compatible (up to date), if possible.