I'm on Aurora, so just upgraded to 21.0a2. On OS X, many pages scroll very badly, with latency before starting the scroll and choppy, slow, scrolling when it starts: http://www.reddit.com/r/programming/ http://trac.edgewall.org/timeline On the other hand, some sites scroll fine, including this Bugzilla.
On Facebook: - My News Feed seems to scroll fine - A user's timeline (once loaded) scrolls badly
Could you try in safe mode: https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode In addition, make some tests with a fresh profile: https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles
This turned out to be due to the SmoothWheel plugin. The author is working on a fix.
Status: NEW → RESOLVED
Last Resolved: 5 years ago
Resolution: --- → WORKSFORME
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