I'm using the default theme in 4.2.4 and KS 16. I can't get the Bookmarks app to function right when KS is enabled. Yes, it's the top plugin, but Bookmarks isn't a plugin, it's an app. When i disable KS, the Bookmark link appears next to Quote Edit etc... below comments. With KS enabled, this doesn't appear.
The issue was mentioned here as well: