If you want to tell someone that something isn't working, do not try to do it on Twitter for the simple reason that it does not work. Invariably, you have to abbreviate. Leave stuff out.
And if the person you're reporting it to has a question, he or she has to ask it in 140 chars. And somehow anticipate your confusion when you don't understand their message.
If you have something to say, and it's important, then find another place to say it. 140 characters is brutal for bug reports.