Being able to go through blocks with ender pearl

When in swimming animation and you through a pearl through a block (in this case I was using bedrock) my character could no-clip/go through the blocks which the players shouldn’t be able to access. it also kept them in swimming mode even though they used a pearl

steps to reproduce 

-Go into swimming mode

-go into a 1 by 1 by any length hole

-through enderpearl upwards, or sideways

-you should now find yourself inside bedrock suffocating, or if you have a room above, or nothing above it. You should find yourself there now. If the room is 1 block tall, you remain in swimming position.

expected results

When using the ender pearl it should hit the top block and not allow the player to go through it, the player should also be canceled from swim mode

results

player goes through the bedrock and stays in swimming position 

here is a video below of me and my friend trying to break into a vault we made to test it’s secuirty. We shouldn’t of been able to clip into the redstone area as shown.