Putting pressure plates/any carpet next to any side of the glass makes that side of the glass invisible.

When you put a glass on the ground and you placed a pressure plates/any carpet next to any sides of the glass, it becomes invisible. For example, when you put a pressure plate/any carpet next to the side of the glass, the side of the glass becomes invisible. The same will happen when you put a pressure plate/any carpet in front of glass, the front of glass becomes invisible. Here are some of the screenshots.