I have a page that suddenly started showing everything in html, despite my being in visual mode while editing. I also noticed that if I scroll down the page, the Revision area is missing data, and the All in One SEO section is missing altogether.
If I turn off the All in One plugin, the visual mode starts working again and revision data reappears. If I turn the plugin back on, the problems reappear.
Any thoughts on how to handle this?