[1.8] Setting blocks to air, issue with falling blocks

[Savage]

So I have been testing things and I noticed when I set a block to air using onItemUse and the block I set to air is under sand (or any falling block), the falling block will stay in place.

 

Any ideas on why this might be happening? 

[SanAndreaP]

So I have been testing things and I noticed when I set a block to air using onItemUse and the block I set to air is under sand (or any falling block), the falling block will stay in place.

 

Any ideas on why this might be happening? 

 

You need to mark the neighbours for update. Use

notifyBlocksOfNeighborChange(srcX, srcY, srcZ, srcBlock)

, where the src parameters are data from your block you've changed (the block set to air)