There is nothing fun about obvious favouritism.
Are you suggesting that the computer system responsible for random number generation is making lovey-dovey eyes at your opponent?
We all get games like that. I've been on both ends of it. Just grit your teeth, commend your opponent on their uncanny luck in chat, and get on with the game. The other complaint we used to get a lot was that the system replaced a played common card with itself twice in a row, which while unlikely in any single event is still a statistical probability over time and enough games. That's the nature of randomness.
It's worth noting that the random draw IS weighted. When you draw a card that is already in your current hand twice, there's a chance that the system performs an invisible redraw. Ironically, this has the effect of reducing feelings of a biased draw system...