Earlier today, I’ve obtained the object Saurok Stone Tablet, the requirement for the hidden treasures Krasarang Wilds achievement but I did not get the achievement. I double-checked if I got it and the tablet location was not interactive. I did sell it but that’s about it.
edit: using a treasure tracking addon and while I’m in the Krasarang Wilds area, it shows up on minimap. When I go in the cave (its location), I “zone” flip to Valley of Four Winds. So that might be the reason (different zone flip).