i've played all 3 borderland games and completed them all and the dlc and i have the regular version of borderlands and i can get past level 50
but the only reason you cant is cause you dont have the dlc which would put you past level 50 thats the reason why its not a glitch
i have civ 5 and beyond earth and there a big problem with beyond earth is you need a really decent pc to play it cause with a bad one the graphics brake in game