While editing, PNG images occasionally randomly disappear. I haven't figured out what exactly causes it and cannot supply a reproducible example. Instead of the image, I get an small image icon in the upper lefthand corner of the image area. The image has to be re-inserted again. This started happening in about the last month.
Operating System: Fedora
Version: 18.104.22.168 release
I thinks this is another example of bug 46447 ..
*** This bug has been marked as a duplicate of bug 46447 ***