So I had spoilers set to off, but it still showed that I needed to scout my next opponent...

And again. Set to spoilers off, but still revealing.

Anyone else having this problem?

I haven't seen it myself. When I go to the Account link at the top the drop down reads: "Hide Spoilers Off." That tells me I should not see the spoilers. But if I understand you correctly it's only happening in one of your leagues, not all of them.