Fixed Warning reason that it's too long

It does break lines. Your example includes the massive word, so the container is the width as the large word, thus, not breaking to a new line.
Edit: I got it.
But it's still shouldn't happen. You never know what words are there (not in English).
 
This really just needs a fixed table layout. In general, this happens already -- it's a table-specific quirk.
 
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