Scores of non-player entities cannot be displayed using tellraw or title

Description
When trying to use /title or /tellraw to display the scoreboard value of an entity that is not a player, nothing appears, even though it says the command ran successfully. For tellraw, a blank line appears.

How to reproduce
1. Summon an entity.
2. Set up a scoreboard objective.
3. Give the entity a value on the objective.
4. Use /title or /tellraw to display the value of the objective on the entity.
Ex: /tellraw @a {score:{name:"@e[type=ArmorStand]",objective:"Score"}} or /tellraw @a {score:{name:"*",objective:"Score"}}

When the exact same steps are done on a player instead of an entity, the score will appear, while the non-player entity's score will not.