Trial Spawner still count down their 30 minutes cooldown when unloaded

When completing a trial spawner, by logging off the game/server and logging back in after 30 minutes has passed, the trial spawner will then be active again.

Want to know if it is intended to work like this – the cooldown is based on real world time, not based on game ticks. Logically, logging off means the trial spawner will be in the unloaded chunks.