In the "Appearance" settings I'm having a weird issue where the checkboxes will not stay checked... kinda. Once checked and saved the checks disappear until you click another page and then go back to Appearance, then they show.
This gets confusing when you make other changes to Appearance and Save then wonder why you aren't seeing thumbnails anymore.
Short video: http://screencast-o-matic.com/watch/c2eDrenYUW
Using Mac, Genesis Framework, Dynamik Website Builder, tested in Chrome and Firefox.