Players who Rage Quit or AFK on PBE?

I've had numerous games where a player either on my team or the enemy team afk because the game's going south. I understand that the PBE is a testing server, but how can we be expected to test out champ balance changes when the game becomes a 4v5? I also understand that the ping for some players may be too high and they cannot play, but my teammates are writing "GG" and then quitting. I've reported people, but I never get any feedback on whether or not someone is punished. I just really sucks spending 30+ minutes playing a game and then losing because a teammate just decides to no longer want to play. My main question is whether or not players get punished on the PBE
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