The actual impact on Feng Shui has the following aspects:
Glass mirrors can reflect the past, making people nervous at night, which will affect their mental state for a long time, thus affecting their health and safety.
The glass is on the side of the door, which is easy to be accidentally touched, resulting in broken glass and personal injury. Even if you are careful, people will always worry for a long time, which will become a source of psychological tension and affect their health.
It's really hard to change. The problem of reflection can be replaced by ground glass. The problem of breakage is not easy to solve. See if you can replace it with a plastic plate with frosted glass effect and do a good job of maintenance at ordinary times. The words on it can't be removed, covered or obscured.