As part of one of our recent updates, the chat icons were changed to SVG based images. An unforeseen side effect of this was that in some scenarios, this resulted in the icons filling the entire page that they were embedded on. To fix this, we added some styling to limit the size of the chats. You can easily work around this by adding styling similar to the following to any page that contains the chat icon:

#stlivechat0 > a > img {
    width: unset;
}