Fallen Stars

OK, this is still bugging me since there is no indication of when it’s actually used. I assume that it triggers on chests and fights (both use loot tables). Does it trigger on breakables when you loot an item? Does it trigger on the essence pickups (the apples) making it worthless? And what happens if you get one just before moving to another realm, will it still count or be erased?

I am betting if you leave the realm the bonus disappears, that it is use it or lose it.

If I pick up an exalted emblem, will a star fragment make it less likely to slip through the clouds?

Yeah, forgot about the emblems, but I thought about that, too. I also assume that the bonus doesn’t stay between realms, and I’ve definitely had a few times where the last item I found was a star. Oh well.