Tellraw displaying score not working

To make this short, using the following tellraw command doesn’t display a score:
tellraw @a {"score":{"name":"@p","objective":"asdf"}}

I used the following commands before using the command:
scoreboard objectives add asdf dummy scoreboard players add @p asdf 5

…and I am currently using SpongeVanilla 1.11.2-6.1.0-BETA-6 with no plugins added. I’m wondering if there is just a simple config setting that needs to be changed, or if this is an actual bug sponge has. Thanks in advance!