"Unbreak My Heart", picked up from Totonowa in Horizon requires Natron, which is produced by Level 25 Alchemists.. as there's no way (besides the market board) for a Level 10 Alchemist to have this, this Leve is clearly mislabeled. It's giving 27786 experience BEFORE HQ. 55572 Experience after HQ.. Just gained about 10 levels using it (went from 13 to 23, I didn't notice it until Level 13 otherwise I'd have used it for 10-13 too)
Saw a report on the SE forums about this from back in December.. so they still haven't fixed it. No idea how long it'll be before they do so though, so try this as quick as you can!