I've moved the links around in the lower left corner, so hopefully this will not happen anymore! As you can see in the screenshot above, the "chat log" link is now far away from the "leave table" link.
In addition, you can now view the chat log without it scrolling down constantly as more players chat. To do so, you will need to open the chat log, and hold onto the scrollbar with your mouse. As long as you've got your mouse down on the scrollbar, the chat log will stay where you've got it.
Finally, there was a bug which caused the screen to appear blank if the zoom level had been set low. It looked as though the site was gone! This has been fixed now.