This isn’t a bug, check out https://minecraft.wiki/w/Patrol
That isn’t a bug. Reinforced Deepslate is not unbreakable, it just takes a long time without enchantments (82 seconds).
This is unrelated to the trapdoor; chorus fruits often simply teleport you far below your current location. For example, if you eat one while on an End City Ship, you will be teleported to the ground below.
Duplicate of MCPE-237778
Are you sure that you haven’t reduced Minecraft’s volume in the Windows Sound output menu? You can check that by pressing Control + Windows + V.
Duplicate of MC-156980