3 ms·

This worked for me on Firefox 60.6.1esr on Debian 9 Linux—changing the setting instantly restored my addons.

• vphantom 8y ago
  No go for me on Firefox 59.0 / Debian 64bit. I even restarted Firefox but they're all still "Legacy Extensions". :(
  • phyzome 8y ago
    Legacy Extensions is different.
• cattitude 8y ago
  BINGO... X-ring. I OWE you, dude.