You're right. I tested both again and all of the above checks. Fear is also only 3 turns.

IDK why Larian decided to reduce the time on a bunch of cc spells. They all have their pros and cons.

Hypnotic Pattern is only 2 turns i believe. Tons of creatures are immune to it. And if i'm not mistaken npcs should be able to wake each other up.
At least they use to do it when they had an ally under the sleep effect. On that note, sleep is also only 2 turns now. That spell should be strong. Because is only strong for 2 levels, lol. After level 2 it's pretty much useless.
Fear is 3 turns and can be saved on every subsequent turn.
Also have to account for concentration checks.
Makes me reconsider taking war caster or resilient if my ccs will only last 2-3 turns anyways.