Recently hipchat released a major UI rewrite, and now there's no way to turn off autocorrect. It's almost useless for developers discussing code, if every technical term you type gets replaced with the first non-technical word that is "close enough."
I am assuming you're on OS X? You can right-click on the input field, and under "Spelling & Grammar" you can turn off auto-correct. This is an OS feature, not something HipChat specific.
Recently hipchat released a major UI rewrite, and now there's no way to turn off autocorrect. It's almost useless for developers discussing code, if every technical term you type gets replaced with the first non-technical word that is "close enough."