box-shadows aren't repainting when a block is added or removed with DOM operations. I wasn't able to make a simple test case (yet). See attached picture.
Created attachment 14423 [details] Picture showing shadow turds
This is affecting a Web Inspector change I am working on. It would be nice to use box-shadow (good dog food) and not a border-image.
*** This bug has been marked as a duplicate of 12729 ***