Edits still won't save

Same problem as detailed here. Suddenly started having this problem again, on a different page. I tried using Safari instead of Firefox, that did nothing. Tried logging out and then logging back in with a different handle capitalization, that didn't work on either browser. I'm so confused. :<

I have been having the same problem for a few months now. I can open up the edit page, but after I save my edit it just brings me to a blank page, like it hasn't loaded correctly, and my edit does not show up, nor is the page in the recent edits section. I try to edit it again and it says that the page is already checked out. I've tried editing on Chrome, Firefox and Internet Explorer and they're all doing the same thing. Is there something I'm doing wrong?