I've been implementing web chat but it seems to have an issue on mobile devices, at first it seem to be non optimized for mobile screens(the font its so small also buttons and everything) I think this would be solved if you add the tag for viewport on all web chat instances
meta name=viewport content="width=device-width, initial-scale=1, user-scalable=no"
Thanks for your reply Tim, Just to be more specific I was talking about the web chat (client side) when the render is configured to renderPopup here's a screenshot