1. I googled Firefox Developer Edition 2. I went to https://developer.mozilla.org/en-US/Firefox/Developer_Edition 3. I clicked "Download the Developer Edition" 4. I was redirected to mozilla.org where there is no mention about the Developer Edition of Firefox. Besides, Aurora is still available and updates to Aurora, not Developer Edition. Same for Nightly, I'm confused a little.
Hm, it seems I've reported it incorrectly, this shouldn't be a private bug and it's not security-related. Sorry!
We hadn't released the developer edition when you filed this bug. things should be working correctly now.