Image Attachment Thumbnail Process

I’ve noticed that in Safari, the image thumbnails are not showing properly when attaching or inserting images inline in my posts. The link to the large version of the image works, but the actual content of the image thumbnail does not load. In Firefox, I just get a text link to the image and no thumbnail image at all. In IE9, the Manage Attachments window does not work because the drag and drop function does not seem to work.

I didn’t see another thread specifically dealing with this, but let me know if this is already being worked on, or if you need more feedback about how it’s working in different browsers. Thanks.