I've been having some trouble with my image editor, for quite some time, actually, so this is not a new release issue. When I upload a large image, say at about 1000x1400 pixels, my image editor does not display it properly. It crops the image to a kind of bar-like version within the editor. (1000x400ish). When I attempt to crop for thumbnail, it does not display the image properly, and then "shifts" the image to the right and upwards on save. (Thus, if I crop an image, the area of the image that I selected is not the area of the image that becomes the new thumbnail.)
I'm hoping someone else has experienced this problem and knows of a quick fix. I'm not the biggest genius with this, but I really need my image editor to work for the theme that I designed. I have a portfolio page, located here: http://www.maggienancarrow.com/?cat=108 which relies heavily on the thumbnails of posts. As you can see, right now the thumbnails are not functioning correctly in the left sidebar. I'm not entirely sure what's going on.
I tried deactivating all image-related plugins. No go. I've had this problem for some time, so I don't think it's related to 3.4.1.