When I "Personalize this Page", I don't seem to have a way to "Stop Editing". I'd expect such a button under the "Page" of the ribbon, but it's not there.
What can cause this?
I don't think it has anything to do with permissions - but of course check this first.
I think the publishing feature does not allow this on these types of pages.
For example - I created a simple list and tried to personalize the page - and it worked - it had the stop editing option.
But when I try and use a pages library with a blank web part page - I do not get the ribbon or option to stop editing.
Why? I don't know.