Update, June 2016 we've moved our public bug tracking to our Known Issues trello board. We also gratefully welcome bug reports through our support form or via email to support@codepen.io.

When we launched our redesign in October, we decided to experiment with a temporary GitHub repo to collect redesign bug reports. We like how that experiment went. So, we've decided to continue experimenting with a new repo, open to public, for reporting any CodePen bugs.