The corrrect way to exit looting a container?

[Lykeion]

I am working on my autoloot plugin. I use EndLooting() to exit the loot window, which works fine on monsters or nodes. But using EndLooting() on containers (like Mirri's hidden treasure bag) leaves the container stuck in the loot window, even though the looting process is actually over. I also tried EndInteraction(INTERACTION_LOOT), but again it didn't work.

Can anyone tell me the correct way to exit a container loot window?