Rated 3 out of 5 stars

The Private Tab extension used to work well... until I updated Firefox to version 52.0 (64-bit). Now, if I have a bookmark with "private:" prefixed to the URL -- e.g. "private:https://addons.mozilla.org/" -- the bookmark no longer works at all. Are other people seeing this too?

Αυτή η αξιολόγηση γράφτηκε για παλιότερη έκδοση του πρόσθετου (0.2.1.2).  Αυτός ο χρήστης έχει υποβάλει 2 παλιότερες αξιολογήσεις για το πρόσθετο.

See https://github.com/Infocatcher/Private_Tab/issues/251
So, Firefox developers decided to fix possible crash in such way... and now we have tricks for "toggle private state" feature and some not implemented/updetad things. :(