Hello,

I have created a plugin (attached) that reproduces what I believe to be a bug. Whenever I call the PlayerDropItemEvent, it seems to sometimes call the PlayerInteractEvent LEFT_CLICK_AIR action. In Minecraft, if I am looking in the air (not at a block that is close enough to break) and I drop an item, the PlayerInteractEvent is fired in addition to the PlayerDropItemEvent. In the reproduction plugin of the bug, I have the following code in the main class:

public void onEnable() {
    PluginManager pm = getServer().getPluginManager();
    pm.registerEvents(this, this);
}

@EventHandler
public void gunUseEvent(PlayerInteractEvent event) {
    Action action = event.getAction();
    Player player = event.getPlayer();
    player.sendMessage("Action: " + action);
}

@EventHandler
public void onItemDrop(PlayerDropItemEvent event) {
    Player player = event.getPlayer();
    player.sendMessage("dropped");
}

gunUseEvent is what one of the methods is called in my actual plugin. Whenever I am looking at air in Minecraft and drop an item, my chat output is:

dropped
Action: LEFT_CLICK_AIR

And when I look at the ground, my chat output is:

dropped

In addition, in my actual plugin, if I am right clicking with a my gun item (which shoots it), every once and a while the LEFT_CLICK_AIR action will be thrown (causing the gun to be in scope mode) - without even left clicking. I'm guessing these bugs (if they are bugs) are somehow linked.

Hopefully that is enough detail to get this figured out and hopefully I am not just misunderstanding how these events work. Thanks for taking a look at this and God bless!