For bugs in Firefox Desktop, the Mozilla Foundation's web browser. For Firefox user interface issues in menus, developer tools, bookmarks, location bar, and preferences. Many Firefox bugs will either be filed here or in the Core product. (more info)
Right now, we show the stack property in the variables view, but its a horrible way to inspect an error's stack. We should display something prettier for this.
There are likely other areas where we could improve as well.