Maybe it's a known issue. I've checked quickly the Bugtracker and didn't found it so sorry if it's a duplicate.
Match report is now impossible to edit with Chrome 15 or Firefox 8. I have also tried with the latest Safari version: same issue.
It's working well with IE8 and Firefox 6 so I guess something is no more accepted in the way it has been coded.
I guess it's the WYSIWYG but not sure...
Please check my video to vizualize the issue:http://youtu.be/I5U4FbrymFU?hd=1