User blog comment:Sarah Manley/Try the New Wikia Editor/@comment-4175522-20110721174040/@comment-1613840-20110721220842

Hi, yes this is an issue with there being too much complex code (usually templates) on the page. It generally happens in all browsers and with the current editor also. It is something we hope to work on in our next round of improving the visual editor. If you are seeing this issue on a page that doesn't have complex code - please let us know right away!