I remember in the past that if you were hidden and someone cast a detection potion you can tell that you were being detected by the eye ball opening. Now you have know clue that someone used a detection potion and can see you they just run up to you and start killing you. You are left wording if the game/skill is broken (again).
If you are hit with Magelight/ Expert Hunter skill line / Revealing flare you know that you can been seen. With a detection potions you can only guess and wonder if it's the game or a potion.
This feels like something that needs to be fixed to help with the confusion.
if you are smart and you prepare for it its not big issue. detection potion has short duration.
i always, when fight starts, spawn shadow image and i keep running from it while doing damage. if opponent is melee its easy and if isnt, i just cloak myself to let ranged player get to me with their detect pots
if you are then in trouble, cast vigor, shadow immage teleport and cloak/sneak it away. you can even heal yourself with rally in cloak. let them waste their resources for spamming aoes and put their potion on cooldown. it hurts them more than you because you can regen everything in cloak
it doesnt work every time but its certainly better than only relying on cloak alone.