IM gonna disagree (slightly) with this one, I know you dont always find out what the red card offence is in the game but, do you find a club in real life appealing every red card issued to a player of theirs? You may find if your only appealing a certain percentage of them you will get some rescinded. I found this last year, got played enough to experience either way this year
There is no Red Card bug at all, it matters in how much you appeal for them. I got one (RED CARD) in August 2010 Appealed for it and it got rejected, I had the same luck with 3 other red cards i got over the next 3 months after. Im in March now and I havent appealed for one since December untill now and it got accepted. Sometimes if you appeal for one too often, they(FA) increase the ban to 2 or 3 or even 4 games. But somehow Andrew is right about the European Red Cards as they always get accepted, well for me they did.