Today's Apple Bug Report will be an easy one. Really easy.
If you check out 'Document Properties' in TextEdit, notice there is a multi-line field labelled 'Comment:'. Try typing a bunch of text into that field. Yes, the text does not wrap!
As a developer, I recognize what the fix is immediately, as I myself have forgotten to set multi-line text fields properly.
I've filed it as bug 4270562. I'm not suggesting you echo this, by any means! I'm sure you will find a better one to report!