I've been making a Drupal site for a little while and I've had few issues. Last night I was working away when I tried to edit a page. I changed the wording of a sentence and hit "Save", expecting it to do the normal thing, remove the overlay edit form and show me the normal view page with my changes. Instead it removed the overlay but extended the edit form to be full screen and removed my changes. This makes no sense to me, and I'd been changing things earlier in the evening with no issue. I tried changing things on the now full sized edit page and hitting Save again, and it just stayed full screen Edit, again removing my changes.
This first happened on a Webform, on the Form Settings section, but it happens on anything I try to edit. I can no longer edit any of my site. I tried it on Chrome, IE9, and Firefox on two different computers, and have cleared the cache continuously just in case, and it still happens. I didn't mess with anything on the theme or any of the modules, and I wasn't playing with anything in the configuration.
I'm almost done the site (or was almost done anyway) so I'm really wanting this to be fixed. I was in the final stages of bug fixes. Does anyone have any ideas? I'd really hate to have to start all over again.