Same with 57.0 on macOS 10.12. Edit: I have FF Studies disabled under about:pref... | Hacker News

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eref on Dec 15, 2017 | parent | context | favorite | on: Unknown Mozilla dev addon "Looking Glass 1.0.3" on...

Same with 57.0 on macOS 10.12.

Edit: I have FF Studies disabled under about:preferences#privacy. I guess that is the reason why it is not installed on my machine.

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