Is Tristana immune to crowd control whe she starts her rocket jump?

I noticed Tristana will jump regardless if you stun, snare, hook or whatever her at the moment she is about to take off. I got knocked in a wall once by Vayne's condemn but still managed to actually jump. I was briefly stunned when i landed but nowhere near the full stun duration.
This happens with other stuns as well, such as taric's dazzle. If you cast Tristana's rocket jump just before you get hit by the stun you will still jump. Unlike Caitlyn which will still shoot her net when stunned but won't actually get pushed away.
I know some ultimates like ezreal's barrage and lux' laser cannot be interrupted but Tristana's jump isn't an ultimate. And Gnars wallop cannot be interrupted either but the tooltip does actually mention this.
Best Answer
On the lol wiki if you look under abilty details Tristana's rocket jump:
Non-Airborne crowd control effects, such as stuns and Root , will take effect upon landing and will not cancel the jump, with the exception of Veigar's Event Event Horizon.
All Airborne crowd control effects, such as knockups, knockbacks and pulls, will cancel the jump and then complete their effects as normal.
So you are not immune to CC, but you wont stop moving till you land.
But blitz pull and vayne's condemn, should have stopped your jump. (might be some bug or something with timing)
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How does Tristana jump reset work?
Rocket Jump Tristana Rocket Jump's cooldown resets on kill or assist or whenever Explosive Charge detonates at maximum stacks on champions.Is Tristana rocket jump a dash?
Tristana can still use her abilities, summoner spells, and item actives during Rocket Jump. Rocket Jump's dash speed depends on the distance of the jump. Close-ranged jumps are much shorter while long-ranged jumps leave Tristana in the air significantly longer.Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.
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