Properly formatted text with an em dash (ex: wordówordóword) presents a problem though when the words are long and the reader/device offers a narrow screen. What results tends to be an awkwardly spaced portion of text. Particularly if justified text is used.
Wouldn't it make more sense to use a breakable character of some sort before or after the em dash(es) to allow better display?
I realize this may be a hyphenation and/or display issue in the software, but the reality is that many such programs are not going to be updated to correct for these situations.