I'm working on a site for a customer that is currently on a temporary URL and has worked fine with no problems until now. I just upgraded to WP 3.5.1 (it was 3.5) and now I can't update the pages - when I change some page content and click 'update' it deletes most of the page (except the first line or two)!! No errors, nothing - just deletes the content!
Have cleared cache, disabled plugins and also reverted back to default theme - problem still persists. So it's obviously not plugins or theme!
So frustrating - any help, advice etc? I don't want to give the URL as it's a temp one. But surely that shouldn't be causing it as it was fine before the update.