From the Acadian watchlist, I can check on the Unsourced box which brings me to a list of unsourced Acadians. Page 1 (the first 200) looks as expected - only Acadians. When I click on the next 200, it seems to become all unsourced profiles, not just Acadians. Shouldn't it continue with more Acadians only?
I can find them all properly by going directly to the Category page, except that page 1 has only 20, not 200 (a more minor oddity). Refreshing doesn't fix it.