The Juggernaut III: The Colossus aerated ooze
https://forum-en.gw2archive.eu/forum/game/gw2/Update-on-Legendary-Collections-More/
Mystic Chromatic Ooze from Juggernaut 3 wont apply the effect to you after completing the collection
Was listed as one of the things being looked at.
Dry Dock Grotto jump got it for me…
so its realy bugged thats great :/ well thx for the info guys
I was able to get this to work in dry dock grotto too.
I stepped off right by the skritt in the picture where the rope bridge meets the upside down boat and ramp. there is water way down below that you can land in, I think that might be the trick. to fall for 10 seconds, and not die/deploy glider.