Heads up! This blog post hasn't been updated in over 2 years. CodePen is an ever changing place, so if this post references features, you're probably better off checking the docs. Get in touch with support if you have further questions.

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.