Superior Potion Recipes in Legend Shop

It says you can use two at a time as an alchemist because if you aren't an alchemist, you can't use 2 of the boost potions at a time.
For example, char1 decides to pick mining and smithing. They use a health boost potion. When they try to use a luk boost potion or something, it will tell them they can only use one boost potion at a time.
Then, char2 picks alchemy and herbalism. They use a health boost potion, and then can also use a luk boost potion while still using the health boost potion.

But wasn't it always like this? I mean I could use a 18 str and 18 dex potions at the same time being an alcchemist and that was a week or two after they released the profession system.