If you hold a bow in your hand while right clicking on a minecart command block, the GUI will open and the bow will charge. Upon exiting, the arrow will fire, most likely shooting and destroying the minecart.
This also applies to:
Splash potions
Lingering potions
Eggs
Snowballs
Water buckets
Lava buckets
Ender pearl
Eye of ender
Bucket of milk
Botte o' enchanting
Fishing rod
Shield
Linked issues
duplicates 1
Comments 7
confirmed for 1.8.1 pre-3. Noticed it works with all thrown entities. Also, the bow didn't fire an arrow or destroy the minecart, but the snowball did.
As of 16w04a, I cannot confirm the Bow behavior, but Snowballs are indeed thrown after exiting the GUI.
Resolving to MC-112992.
You're right. Confirmed for 14w11b, and relates to MC-17016.