Sean Allen Walker

This is due to platform restrictions that Xbox has made, which Nintendo has too. It's only available on Windows 10 and mobile for security reasons.

There is a chance that they will pick up an item if you throw it at them, it's not guaranteed. However you can use a dispenser to give them armor and weapons manually. Out of maybe 30 husks I spawned in, 2 picked up items, so it is quite rare.

Microsoft doesn't allow the "add server" option for security reasons, nor does the switch.

I have come across this before, but not in the past month. What I did to fix this is to make the repeating command block an impulse, wait, then put it back to repeat.

This is probably due to the poor connection you are having, it's too slow that it isn't able to process your request.

You have to download the music pack in the marketplace.

From my experience the animals don't actually despawn, they get teleported to the same coordinates (number wise) in the nether as the overworld. The reason why is because it doesn't properly calculate the *8 or ÷8 mechanic that happens with players, sometimes resulting in the mobs being teleported to incorrect locations. This bug used to happen with players, but now it only affects entities.

Are you hosting a server via the software available for windows 10, or are you trying to join a server already available (i.e the Hive, Lifeboat).

They haven't worked since 1.13, which is due to the implementation of the Render Dragon Engine.

This is probably the bug MCPE-21416, you should go upvote it.

I have actually made a strange discovery when digging deeper into the bug. It is a different version of the same bug listed above. If the player breaks the chest, it gives you the chest back but deletes all its contents, breaking an invisible shulker box crashes the game. What I've found odd is that if you use a piston to remove the shulker box, it doesn't crash the game and gets rid of it, which is a potential workaround to get rid of the invisible shulker box without having the game crash. There is no current way to recover the shulker box unlike the chests, furnaces, or hoppers (which all drop when broken). I must clarify this, it will delete all items, but I would rather loose a shulker box that is replaceable, than having an invisible shulker box that crashes the game when trying to interact with it. 

This is because of world corruption or a run out a data storage space. There is a different bug with mobs despawning along chunk boundaries, which has been a well known bug, but I doubt that bug is the reason for the loss of your horse.

This same issue just occurred in one chunk of my dedicated bedrock server. Made a small auto-smelter, it was there for awhile. However when I went back to it to get some glass the chests and the shulker box unloading the sand were invisible. The furnaces and the hoppers were not interactive and breaking them did not drop any items. If you placed a new chest that one would appear, but would not update the invisible chests. Restarting the server didn't fix the issue, and yes I can confirm breaking the invisible shulker box crashes the game.

You aren't able to create and join realms in beta versions of the game. If you want to purchase and play on one, you must exit the beta subscription from the app store.

Duplicate of MCPE-58285

This may be related to entities despawning along chunk boundaries. If you can, try to isolate all villagers in the center of one chunk and see if they still despawn.

I can confirm this issue. On my realm, my friends and I used ender eyes and it brought us to a stronghold with no portal.