Since the firsts snapshot the 1.13 came out, and the team command changed, aciocating a color to a team and putting a scoreboard in the sidebar of that color doesn't allow the scoreboard to show up when you are in the team with that color and there is someone with a score.

Commands : /team add see

/team option see color aqua

/scoreboard objectives setdisplay sidebar.team.aqua animalsBred

(the objective animal bread is already in the world)