I worked on adding TLS 1.1 and 1.2 support to firefox back in the day, and the whole process left me so disappointed I asked to be removed from the list of contributors. I wish mozilla all the best, but it's not an especially well run organization and this post gives another example of why.

I submitted 2 patches during an 2018 open night to bring in more volunteers in Berlin. The actual folk there were amazing, but the review process, tooling, and bureaucracy was so upsetting that I never bothered again. I'm not sure the fixes were approved, and it wouldn't be surprising if these open nights don't convince many to contribute.