User blog comment:Kirkburn/Technical Update: March 3, 2015/@comment-11387016-20150304195803/@comment-126761-20150304205644

By the first issue, are you referring to the 'recent photos' module being missing, mentioned below? If so, we'll try and get a update on that soon. If it's an issue within the editor instead, please let us know.

The second issue ("undo revision..." not showing up) is definitely wrong, and a fix will be coming.