Minecraft duplication glitches using and not using pistons, glitch from two updates ago but never found or fixed

Currently there is two duplication glitches in mine craft that duplicate skulker chest allowing for all and any item to be duplicated quickly, can be used in any bedrock and on bedrock realms to my knowledge but primarily used on xbox bedrock. my friends have been using the glitch so far so here is the videos for it

No sticky pistons
https://www.youtube.com/watch?v=i8duPN6LaNQ
Sticky pistons
https://www.youtube.com/watch?v=i8AMLLBXZ08

If you mine a shulker and place it down quickly as your moving it, it will duplicate it, please fix this as soon as possible since this causes lots of problems and creates a unfair un fun survival setting