When it happens in latest Nightly, try opening the video in a new window and see if playing creates a new inhibitor (as per Comment 42).
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2047262 Title: Firefox stopped inhibiting screensaver on video playback To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/2047262/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs