as many of you have noticed, the 'Edit Post' function is a bit screwed up. When you try to edit a post and click the 'Save' button, nothing will happen.
This is occuring on multiple browsers, Serverman said for him it worked on iPhone though.
A temporary fix is:
When trying to edit a post, click the 'Go Advanced' button, edit the post and click 'Submit'. That should work for the time being.