This exploit is for the Lopp Party Fabkit from the Whitevale reputation vendor.
The challenge has you smoke a hookah which gives you a buff allowing you to see the floating shiny Vinds. You then have to jump through them within the time limit to complete the challenge.
What makes this hard is that the buff also gives you a disorient which will randomly alter your movement inputs. Removing the buff via right click will get rid of the disorient but also causes the shiny floating Vinds to vanish so that you can't collect them for the challenge.
The exploit is that right after you get the buff you can use a CC breaking ability to drop the disorient yet still retain the buff allowing you to easily complete the challenge with normal movement. I've only confirmed this to be working with the Spellslinger's Void Slip ability but I assume any form of CC breaker would work.