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)
1. Open new blank tab.
2. Click on content area.
3. Hover over reload button.
No border appears.
I've only tested this on OS X, since I left my ThinkPad at the office.