Do more on the web, with a fast and secure browser!
Download Opera browser with:
Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
No one has replied
Second that!
@oudstand Yeah, it looks like the Sidebar API doesn't support loading pages other than those in the extension itself.