Works for me but leaves room for improvements…

Like with some of those L O N G E R tweeting apps recently: if youre trying to send a test tweet to yourself using the most recent standard "Twitter" app to verify… that tweet of yours will (most likely) never show up in your own timeline…!
However, if youre using "Tweetbot" it does (or might mostly)… :/
Yet sending your long tweet to some other address but your own will eventually (/always) succeed (in my experience so far)…
Above critique might, to some part, go towards "Twitter" since with their older version I personally never encountered such behavior…

What could be improved with THIS app though is that when filling up the entire space provided for typing then finishing by tabbing Done to overview ones text before sending…TwitPlus no longer allows scrolling of your text anymore…That can only be done back in editing mode yet the (e.g. iPhones) virtual keyboard is covering the bottom lines of your text space which makes it somewhat annoying reaching it at all in order to scroll down again once you scrolled up by tab-and-hold the top portion of that space.

MakeMusicMyself about TwitPlus – Longer Tweets