Since upgrading to 3.9, all images show as left-justified in the Edit Post (or Edit Page) area, even though when I preview, they are justified as I specified. This is very frustrating, as I can't see what the post will look like.
In addition, once I insert an image, I can't edit any of its properties. I've tried clicking, double-clicking and right-clicking and nothing gives me any tools to edit the image. So I'm having to delete and reinsert.