title and tellraw inconsistent JSON parsing

The title command will parse this JSON as having a text attribute.

title @a {text: "Hello, World!"}

The tellraw command will NOT parse this JSON as having a text attribute. It will not throw any errors, it will just quietly fail to output text.

tellraw @a {text: "Hello, World!"}

Instead, this workaround is required:

tellraw @a {"text": "Hello, World!"}