Easiest way to test it safety is to create a new character in single player, go admin then scoff a yellow lotus potion right after Conan cuts you down from the cross.
Since you are on X box I would assume ui looks the same as pc when playing with controller. Theres a filter for a things you can build/ craft in build menu for crafting tables which by default is set to none which will only show base game items you need to use right stick to change the filter to either All or special to see the battle pass items
Yellow lotus potion won’t reset any of the special knowledge. Neither from battle pass, library of esoteric artifacts, or other knowledge you learned “out there”.
The only knowledge this potion affects are those which are available usually for everyone and you have to spend knowledge points to acces the recipes.
EDIT:
My experience considering this is only with Exiled Lands, there might be problems in Isle of Siptah.
Ah, sorry for that statement then and thanks for the heads up. I have slightly above zero experience with IoS. Also if that’s so, obviously has to be a bug.