Swain's Q doesn't proc Rylais
Not sure if this is intended, but it sure as hell doesn't feel like it
EDIT: So apparently this is because slows don't stack anymore. Only the strongest slow will be applied. (But what if the stronger slow (Beatrice) will time out before the weaker one would (Rylais)? Shouldn't the weaker slow be applied, but stay effectless until it is the strongest slow?)