Using the latest master webchat.js, I have this strange behaviour when I talk to the bot that user message is first displayed above the last bot message, then after a new bot reply it is positioned correctly => inbetween the last bot reply and the previous bot reply. I can reproduce this also on the examples.

See video
https://youtu.be/0tkQ22iFZpQ