@Riot/Meddler: Taunts cannot cancel Anivia's ult. Are those intented?

As far as I know, Anivia's ult is a special kind of channel thus any CC which can interrupt channel should be able to cancel Anivia's ult as well. But taunts ({{champion:103}}'s E, {{champion:98}}'s E, {{champion:33}}'s E, even {{champion:3}}'s R)cannot cancel Anivia's ult. Are those intended? Edit: Well, I can upload only 3 files. I'd like to upload Rammus's screenshot but I can't. The result is same as the other champions.
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