If anything is used outside of its intended function, it will probably result in some unintended or unusual outcome. For example, if the reverse gear is used to try stop a car, this will result in a less than desirable driving experience. In one of the tests done by a user, a long exposure was taken at night on a tripod and when the LCD light was turned on, the exposure time decreased. Perhaps, the LCD display needed to be lighted up to check the settings, but after it turns off automatically in a few seconds, then an exposure can be taken. There is no need for the LCD to be lighted up when an exposure is taken. For long exposures, it is common practise to cover the camera body with a light-proof black cloth to prevent stray light from entering the VF and causing flaring effects in the exposure. I doubt Canon will do anything about this "issue" and at the most Canon will just send out an application note?