Bug: Dragonets 2 and 3 don't appear in Dragon's Nest

[Brave Sir Robin]

Map: Dragon's nest, with 3 enemies remaining (bosses).

Steps:

1. Killed first dragonet.
2. Killed second.
3. Someone pulled the third dragonet out of the cave causing it to reset.
4. Fight restarts so we have to kill all three dragonets again.
5. Killed first.
6. Second and third dragonets don't show up...

Edit: Video added.