2. I've seen this issue before as well throughout the system, although since I don't have the Download Pro add-on purchased, I haven't see in there.
CAF: When you save certain things, all that comes up is a blank white page with the text "done" on it.
An example is when you do a search in the admin panel. After you type something and click search all that comes up is a white page with the text "done"
3. This could be done with a code. I recommend making a request in the Code Requests board.