Whatever this author has done to the input field has really screwed it up on my phone. I type "Kae" and it just ends up as "KaekaeKae", any attempts to hit back

Whatever this author has done to the input field has really screwed it up on my phone. I type "Kae" and it just ends up as "KaekaeKae", any attempts to hit backspace just duplicate the input text again and again.