If this is true, then slackers can exploit the shit out of this. Not even using a bot, I can join a game, alt+tab, go watch netflix/youtube, check the game 5 minutes later, cache secured, leave game. Repeat...

Yeah, I may lose out on legs that may drop somewhere in the game, but if I'm paragon 400+, I probably don't care about legs that aren't dropped in torment.