There is an update for RealArtist in the Installer.app through the imimux Repository. The update to the app fixed a few bugs. However, since that last time I used this app I noticed that if you have actual pictures in your Camera Roll instead of screenshots…it will give a nice thumbnail preview. I’m not sure if that has something to do with the update or if I only had screenshots in my Camera Roll last time. I still get glitching and the app still does not work well with screenshots (both importing them into the app and looking at thumbnails of them). Here are the screenshots: