Hyphenated Words note being recognized by spell check

It’s a minor bug, but one that is quite annoying when I’m running the spellchecker.
For example, I have a character named Erun-tann. The spellchecker will not let me select the entire word and add it to the dictionary. So while I’m running the checker I keep getting alerted to both words of the name being misspelled. I want to make sure the spellchecker picks up misspelled words that are similar to an example name so I don’t want to add the words separately.

Being able to add hyphenated words would be great.