So far great plugin! Thanks for your work. This is more of a suggestion, rather than a bug. When going to Appearance -> Widgets, it's tending to take quite a while to load a site in my company. It turns out the dropdown of the tags and authors is what's doing it. We have about 6,000+ tags, and quite a bit of authors as well. Since there's so many tags/authors, PHP actually stops running and and the entire HTML isn't finished, making the widgets un-editable.
Might I suggest making the author/category/tag dropdowns a text field instead that can be comma delimited by the ID?