Tree growth ignores restrictions

Upon tree growth, it ignores the block above it restricting it from growing a large tree, and just removes the block, but only the block directly above the sapling.

 

1) Dirt block placement y-axis 68 (2019-11-17_12.01.43.png)

2) Sapling placement y-axis 69 (2019-11-17_12.01.43.png)

3) Dirt block preventing large tree growth placement y-axis 76 (2019-11-17_12.02.14.png)

4) Sapling upon growth destroys dirt block above the sapling (2019-11-17_08.28.51.png)