Sorry 007 fan. I've seen similar problems with Chrome before. You can make sure you're using the most current version, but Chrome usually updates automatically so you probably already are.
It's a shame, because Chrome is probably the fastest browser, but nothing is perfect.
You can try another browser.
Wish I could be of more help, but there isn't much that can be done.
Internet Explorer works fine for previewing, so I'll try to remember to switch to that when I'm providing critiques.
It's weird that the preview works in the PM system with Chrome but not in the various forums.