I've only submitted one article, but I can't edit it, so at least half of the bug is repeatable,
I posted an article with "OCN" in the title. Upon posting, it was changed to "Ocn". And then, when I tried to edit it, I found there was no option to edit the title of the article.
This is the article in question:
I expected to be able to post something like "OCN" without having it break. If caps are an issue, perhaps a limit of 3-5 capital letters in a row before going lowercase?
Also, we should definitely be able to edit the title... that's more of a missing feature than a bug.