If the loot is truly randomly selected, then it's perfectly possible to get results like this. I don't know whether TOR has any loot bugs, but I would just make the advisement that random loot means RANDOM, and if the system is working properly, any patterns you may think you see are simply coincidental. "MY LOOT IS BUGGED, I GOT THE SAME DROPS FOUR TIMES IN A ROW" does not mean there's an actual bug. Of course, maybe they have some non-random loot selection process in place, and I may simply not be aware of it. But I know that's how it worked for World of Warcraft, anyway.