I have upgraded to the new version of WP recently, and yesterday I tried to update an old post just to find out that it does not work! I've tried again today, no luck.
Also, I tried to update a page as I needed to add something to one of the pages and that doesn't work either.
I just press the button and it's like pressing refresh instead of update.
Preview changes also shows an old version of the page/post.
I have tried to deactivate all plug-ins and cleared my cache, but still no luck.
Anyone else having this issue? :(