Mob Names will be duplicated under certain circumstances

When naming a mob with a name tag, the name will sometimes show up twice

How to reproduce

1 - Give yourself this name tag - 

/give @p minecraft:name_tag{display:{Name:'["",

{"text":"[","color":"gray"}

,{"text":"BumbleRay","color":"gold"},{"text":"] ","color":"gray"},{"text":"ic22487","color":"yellow"}]'}}

2 - Name a mob

3 - Observe the bug