@Twitter, @TwitterSupport, for many years, i cannot agree with your handling of mentions and replies.
my blog can be viewed in 2 forms. in tweets and replies tab, all my tweets are visible. so, what is expected in the main page, which is under “tweets” heading? there should be tweets without replies. but, actually, there are tweets with replies but without mentions.
for example, see my “profile” page now. my post to googleplus is not visible, because it has a mention, even if it is not a reply. but my replies to that post are visible here, even though they are replies, (probably because they do not have mentions).
i have just sent these 3 messages, with url, also to twittersupport via private message