Banner glitch

Banner middle click glitch

What I expected to happen was:
When I middle click (Press on my scroll button) I would get that banner (Ex: Pink)

What actually happened was:
When I middle clicked it it gave me a black banner (On all colored banners!)

1. Turn on creative mode
2. Get any type of banner out
3. Middle click that banner and whatever color it may be it will give you a black banner.