Sponge: InteractItemEvent and InteractBlockEvent behave incorrectly

I am currently running

• SpongeVanilla version: spongevanilla-1.12.2-7.1.0-BETA-93
• Java version: OpenJDK Version “1.8.0_171”
• Operating System: Linux Mint 18.3 Sylvia (Kernel: x86_64 Linux 4.13.0-45-generic)
• Plugins/Mods: Empty (Only one my experimental plugin)

Issue Description

At the last build for version 1.12.2, the following bugs are observed: 1. InteractBlockEvent is not called when the right mouse button is clicked (this is a SECONDARY event for both hands). 2. InteractBlockEvent for the left hand (PRIMARY event) does not contain data about the used item when the player clicked into the air. EventContext is empty.

My experiment conditions:

• Main hand: Stick
• Off hand: Empty

Listener code:

@Listener
public final void onInteractBlock(InteractBlockEvent event) {
	Objects.requireNonNull(event, "event");
	
	System.out.println(event.getClass().getName());
	System.out.println(event);
}

Console output:

Left button to air

org.spongepowered.api.event.InteractBlockEvent$Primary$MainHand$Impl
MainHand{cancelled=false, cause=Cause[Context=Context[], Stack={EntityPlayerMP['Lignium'/0, l='world', x=-0,53, y=64,00, z=1,22]}], context=Context[], handType=MAIN_HAND, interactionPoint=Optional.empty, source=EntityPlayerMP['Lignium'/0, l='world', x=-0,53, y=64,00, z=1,22], targetBlock=SpongeBlockSnapshot{worldUniqueId=00000000-0000-0000-0000-000000000000, position=(0, 0, 0), blockState=minecraft:air, extendedState=minecraft:air}, targetSide=NONE}

Right button to air

<empty>

Left Button to block

org.spongepowered.api.event.InteractBlockEvent$Primary$MainHand$Impl
MainHand{cancelled=false, cause=Cause[Context=Context["sponge:owner"=EntityPlayerMP['Lignium'/0, l='world', x=-0,53, y=64,00, z=1,65], "sponge:notifier"=EntityPlayerMP['Lignium'/0, l='world', x=-0,53, y=64,00, z=1,65]], Stack={EntityPlayerMP['Lignium'/0, l='world', x=-0,53, y=64,00, z=1,65], com.google.common.util.concurrent.ListenableFutureTask@6c85ea3e}], context=Context["sponge:owner"=EntityPlayerMP['Lignium'/0, l='world', x=-0,53, y=64,00, z=1,65], "sponge:notifier"=EntityPlayerMP['Lignium'/0, l='world', x=-0,53, y=64,00, z=1,65]], handType=MAIN_HAND, interactionPoint=Optional[(-2.370593761577998, 64.0, 1.7115556037860598)], source=EntityPlayerMP['Lignium'/0, l='world', x=-0,53, y=64,00, z=1,65], targetBlock=SpongeBlockSnapshot{worldUniqueId=8a2303f1-f006-4e0d-a866-8ffddde81fd6, position=(-3, 63, 1), blockState=minecraft:stone[variant=stone], extendedState=minecraft:stone[variant=stone]}, targetSide=UP}

Right button to block

org.spongepowered.api.event.InteractBlockEvent$Secondary$MainHand$Impl
MainHand{cancelled=false, cause=Cause[Context=Context["sponge:owner"=EntityPlayerMP['Lignium'/0, l='world', x=-0,54, y=64,00, z=0,58], "sponge:notifier"=EntityPlayerMP['Lignium'/0, l='world', x=-0,54, y=64,00, z=0,58], "sponge:used_item"=SpongeItemStackSnapshot{itemType=minecraft:stick, quantity=1}], Stack={EntityPlayerMP['Lignium'/0, l='world', x=-0,54, y=64,00, z=0,58], com.google.common.util.concurrent.ListenableFutureTask@e404e4c}], context=Context["sponge:owner"=EntityPlayerMP['Lignium'/0, l='world', x=-0,54, y=64,00, z=0,58], "sponge:notifier"=EntityPlayerMP['Lignium'/0, l='world', x=-0,54, y=64,00, z=0,58], "sponge:used_item"=SpongeItemStackSnapshot{itemType=minecraft:stick, quantity=1}], handType=MAIN_HAND, interactionPoint=Optional[(-2.336925506591797, 64.0, 0.6462124586105347)], originalUseBlockResult=UNDEFINED, originalUseItemResult=UNDEFINED, source=EntityPlayerMP['Lignium'/0, l='world', x=-0,54, y=64,00, z=0,58], targetBlock=SpongeBlockSnapshot{worldUniqueId=8a2303f1-f006-4e0d-a866-8ffddde81fd6, position=(-3, 63, 0), blockState=minecraft:stone[variant=stone], extendedState=minecraft:stone[variant=stone]}, targetSide=UP, useBlockResult=UNDEFINED, useItemResult=UNDEFINED}

org.spongepowered.api.event.InteractBlockEvent$Secondary$OffHand$Impl
OffHand{cancelled=false, cause=Cause[Context=Context["sponge:owner"=EntityPlayerMP['Lignium'/0, l='world', x=-0,54, y=64,00, z=0,58], "sponge:notifier"=EntityPlayerMP['Lignium'/0, l='world', x=-0,54, y=64,00, z=0,58], "sponge:used_item"=SpongeItemStackSnapshot{itemType=minecraft:air, quantity=0}], Stack={EntityPlayerMP['Lignium'/0, l='world', x=-0,54, y=64,00, z=0,58], com.google.common.util.concurrent.ListenableFutureTask@2978b321}], context=Context["sponge:owner"=EntityPlayerMP['Lignium'/0, l='world', x=-0,54, y=64,00, z=0,58], "sponge:notifier"=EntityPlayerMP['Lignium'/0, l='world', x=-0,54, y=64,00, z=0,58], "sponge:used_item"=SpongeItemStackSnapshot{itemType=minecraft:air, quantity=0}], handType=OFF_HAND, interactionPoint=Optional[(-2.336925506591797, 64.0, 0.6462124586105347)], originalUseBlockResult=UNDEFINED, originalUseItemResult=UNDEFINED, source=EntityPlayerMP['Lignium'/0, l='world', x=-0,54, y=64,00, z=0,58], targetBlock=SpongeBlockSnapshot{worldUniqueId=8a2303f1-f006-4e0d-a866-8ffddde81fd6, position=(-3, 63, 0), blockState=minecraft:stone[variant=stone], extendedState=minecraft:stone[variant=stone]}, targetSide=UP, useBlockResult=UNDEFINED, useItemResult=UNDEFINED}

My conclusion:

Left button to air: Missing context. Right button to air: Does not fired. Perhaps also there is no context. Left button to block: Missing data about used item. Right button to block: Fired SECONDARY event with full data. However, also fired SECONDARY event of the off hand.