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That is indeed a possibility to consider. Dubs on a French language tv channel would not be announced. They would probably be of better quality than English dubs on an English language channel, and (although I know nothing about Actual Beatrice) a possible poor quality would be more difficult to detect for a non-native French speaker.
(I can't think of a plausible candidate, even after a short search for French language Canadian productions).
Edited by gropcbf

I remember watching this around 2 years ago (in 2018, as of the time of writing) on a French-language cable channel.
I assume it's a recent 2010s show, so I'll say it's from the 2010s, and it was historical in subject matter. The plot involved a frontier town in 1800s Canada; the show was about the said town, and its French-Canadian inhabitants who seemed to have a conflict with the Anglo-Canadians that were also there.
The show was mostly in French (un-subtitled) with some lines in English, befitting the historical context; and it was night and raining in most of the scenes. My memory of this show was quite vague so I couldn't exactly broadly look it up.
Edited by ActualBeatrice