Poorly designed parts which caused no problem on bikes with rim brakes now are problematic on disc brake bikes. The offending Q/R levers open so far that they can go into the brake disk, possibly leading to instant unexpected stopping of the wheel. Quick fix is to remove the quick release and remount it with the Q/R lever on the right (non-disk) side. Real fix is to replace the poorly designed Q/R with one that does not open too far.
