Waterloggable blocks retain their waterlogged state when moved with pistons or slime blocks

A couple of months ago, I saw this video: https://www.youtube.com/watch?v=6NU9ueW-6D4 . In this video, he successfully creates a flying griefing machine in a Java snapshot. I was curious to see if this was possible in Bedrock, so a couple of days ago I built one in my creative test world and I was surprised to see that it worked! I see this as a terrible bug since it could be used to grief realms. To make one of these, copy everything that was shown in the video and move where the observers are placed. Please remove this ASAP since it might ruin people's bases.

 

EDIT:
This is one of the most dangerous bugs ever. Surprised how it's been 6 months already and this is still in the game. Actually - scrap that, the Bedrock team is too busy implementing more DLC than to care about dangerous bugs like this. I honestly care no more for the damage that this can be used to create - finally moved on to Java. Good luck fixing this, the devs probably still don't know this is in the game.