WW immune to Morgana's Q (stun)

I have been playing Morgana last days, and i'm encontering the following BUG: When I tried to stun the new reworked WW, somethimes the Morgana's Q passes trought him, like a blast, and do not neither stun him, nor making him any damage. This hapened twice in one game, and almost in every other in which i was playing Morgana against WW. Do you encounter the same situation?
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