The bonus chest is really only a chest that gives you a little head start, so can include:
The Bonus Chest spawns near the player and has torches on each side.
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Open the chest and then you will be able to drag items into the chest, in which they will then be removed from your inventory.
you cant
You right click on it.
It holds items like a chest
Sometimes it is lag. But in this case, it seems like you have a block on top of your chest. If you put a block on your chest, the chest wont open.