"Selector '<selector>' found nothing" message is missing for /scoreboard teams join/leave

• Joining to a team doesn't give you this error message at all

Example command: (you won't get anything in chat)

/scoreboard teams join Team @e[type=!Player,r=0]

• Leaving a team gives the error message only for the first selector.

Example command: (you'll leave from any teams you've been before, but you won't get the error message for the second selector)

/scoreboard teams leave @p @e[type=!Player,r=0]