Banner attaches to nearby wall rather than replacing snow layer

when i place a banner on a snowlayer, the snowlayer doesnt dissappear, the banner gets placed inside of the ground below the snow

What I expected to happen was...:
the snow should have dissappeard and the banner would stand in its place

What actually happened was...:
the banner placed inside of the block below the snow

Steps to Reproduce:
1. look directly at a snow layerin a straight line(doesnt happen if you look at the block diagonally)
2. place banner
3. banner is placed inside of block and turned 90 degrees