Thanks. So from what I'm seeing, it looks like if you select the (long) save string, it shoots the game window out of the view of the browser. If you scroll all the way down (but don't use the mouse wheel) and then select the text, it will stay on screen.
I have a fix, but I think I'll hold off until I have a better solution for how to do the WebGL updates. As you guys have found, the text is still being selected and is copy-able; it just disappears. For me, the disappearance was until I clicked again and deselected the text.