minecraft:nameable property alwaysShow not working

Release_503712

Summary:
When setting `"alwaysShow":true` inside `minecraft:nameable` the name plate can only be seen when looking directly at the entity, within player's reach. This worked up in 1.1 and seemed to break in the early 1.2 betas.

Impact:
Using alwaysShow name tags is a great way to guide the player to PoI, label menus, and give out general information.

Repro Steps:

1. Run included world file with built in behavior pack
2. Look at floating silverfish

Observed Results:
Even with alwaysShow enabled, you can only see the name plate when looking directly at the entity.

Expected Results:
Name plate should always be seen as long as the entity is within a loaded chunk visible to the player.

Screenshots/videos attached:
Example taken from included behavior pack

         "minecraft:nameable":{  
            "alwaysShow":true
         },