Post-game teamwork popup?

After a Quick Match I saw a popup asking me to rate out of 5 the teamwork of my teammates during the match. I’ve never seen this kind of popup before. Does anyone know why I saw it? Did someone report someone else in-game or something?

These are random pop-ups usually asking everybody after the match. They might also ask how well your communication was or if you find the reporting system sufficient. We do not know though, if the developers do anything with this data. In all likelyhood not.