[Gameplay] Lyssandra's ult
Don't know if this is still being worked on (or if it ever was), but sometimes, when you ult yourself as lyssandra, you'll still receive damage, which is incredibly crippling. I think lyssandra becomes untargettable when she ults, so point and clicks don't work anyway, but when someone uses a skillshot (like lux's ult) you still get the damage and you can't do anything about it.
I see people talking about this bug from time to time, so it would be fun if something was finally done about it.