Edit button disappearing
After you save an edit, the edit buttons are gone.
I've noticed this mostly on pages with Table of Contents (like so:
http://www.vaultwiki.org/demo/Apples-Test).
There is a nice feature where each section has its own edit button which brings up a sort of "quick edit" box. However if you save your edit, all of the edit buttons on the page disappear: the ones for each section, as well as the main one at the top. When you refresh the page, they all come back.