Detection/cloak break needs a cooldown like CC.
There are two problems, which are not very recent.
1. Cloak being broken by abilities cast on you before you use Cloak
2. Detection Potions having no audio or visual queue
This first is relatively new, I'd say this calendar year it became a real issue.
The second very old. 100% for Detection Potions, I use them on other classes. But Magelight has an orb visual, Camo Hunter has glowing weapons visual. Detection Potions have nothing. You just get repeatedly taken out of cloak with no reason why, and it's hard to distinguish if it's a bug (Point 1), or a genuine reveal.
I believe it is some what broken. Last night I was cloaked in the middle of Cyrodill with nobody, including my alliance, and cloak wouldn't work for about 3 mins. I'd hit cloak and after 1 sec I wasn't hidden. Kept doing this until I went to a keep and ported to bother keep. I'm sure someone will claim I was being trolled but this has happened more frequently since stonethorn released. Game is a giant bug with minimal attempts at fixing. Shame cause it *was* a great game. Becoming more of a meh game nowadays