The implementation is a bit clunky. It has some issues:

- The Back and Forward navigation doesn't work! 😦
- The Context menu is a smaller version than the Context menu when opened in the normal panel. It misses multiple entries, like the top navigation icons.
- It doesn't support loading pages by drag & drop from the Bookmarks toolbar or the address bar's lock icon.
- Also, Dark Reader doesn't work in the Side View panel. 🤷

It's a pity that this add-on is implemented half-baked. Because split tab functionality is very useful.