Snow bug. If a block is placed over or on a leaf block in the snow biome (when the leaves are supposed to be white) it changes the colour back to green

So, I've been making a Narnia inspired world and have found a lot of bugs with snow.

I was placing blocks around a tree that was white with snow, and I expected everything to be normal. But then I noticed that when you place blocks over, on snowy leave blocks they turn back to green and it's quite annoying.

 This being fixed would be much appreciated. Thank you