I just noticed that TeX (2021) is placing a hyphen before the 'n' in
"dictionary" rather than after. Two dictionaries I've self-referentially
looked at both say that the second syllable of "dictionary" is "tion", as in
"dic-tion-ar-y".
Here's a MWE, using the TUGboat class for a narrow column:
%%%%%%%%%%%%%%
\documentclass{ltugboat}
\begin{document}
Dictionary, and dictionary, dictionary, dictionary.
\end{document}
%%%%%%%%%%%%%%
Is this a hyphe-
nation bug requiring an official exception?
- Doug McKenna