Jhin and Blitz E (knockup)

Just curious, I lost early game because the combo of {{champion:53}} knockup and {{champion:202}} W did not chain and the enemy got away free instead of dying. I thought I had missed the first time but it happened on two other times before level 6. Once on the actual knockup, and twice when they just landed. Is this intentional or a bug? Because it's triggering.
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