Addons with 'teleport to player' properties is broken in Realms. 

Partner Rank: 2
Partner Team Reporting: LINSCRAFT
Verification builds: WIN10 MCPE 1.14.20
Regression Builds: WIN10 MCPE 1.14.20
Summary: The addon 'Kylin' with 'teleport to player' properties works properly in 'Single Player' but is broken under realms. 

Impact: Player that plays our content in multiplayer may find it easier to beat the final boss 'Kylin' by simply shooting the boss from a distance since the teleport to player function is broken in the realm. The boss should teleport to the player to engage in close combat and spit fire at the player after the player moves out 16 blocks of the 'Kylin'. This property is to provide a dynamic player-mob engagement and prevent the player from using tricks by sticking the 'Kylin' behind objects and shoot the 'Kylin' to death. 

Repro Steps:
Step 1: Create a new world and import the addon 'Kylin' into the Minecraft Bedrock Client.
Step 2: Upload the world onto realms and load addon 'Kylin' to realms. Play mode is 'Survival'
Step 3: Spawn 'Kylin' and move away from it for about 20 blocks. 

Observed Results: In survival mode, the 'Kylin' will continue to fire a fireball at the player and unable to teleport to the player to engage in close combat. 

Expected Results: The 'Kylin' should teleport to the player to engage in close combat and spitfire in survival mode.