Hyphenation language choice may be messing up Paragraph Style with a + symbol

[Old Bruce]

I think that in Publisher there is a problem with (small and relatively minor) with the use of one language being set in the Mac OS system preferences. I use Canada and English (Canada) for Region and Language. With Affinity Publisher I notice that applied Text Styles are always shown with a + in the Paragraphs Studio but not in the Text Styles Studio. I believe this is down to the fact that in the Character Studio I have no choice for English (Canada) in the Language section's Hyphenation.
As I said it is a small thing but it is disconcerting in that I will glance at the Context Toolbar and see the + next to the Paragraph Style name and become concerned with what has changed. I then check the Text Styles and there isn't any + symbol.