If a player standing on farmland and in the moment when farmland changing to a dirt a player can't move and a sky will be gray!

If a player standing on farmland and in the moment when farmland changing to a dirt a player can't move and a sky will be gray!On pictures you can just see a gray sky, but i leave a link of video record where you can see what i talking about!Sorry for bad english!
Link: http://www.filedropper.com/bug