I am not having any problem with your original code (I had to change the texture image and the fill in the material).
Can you post a screen shot of what you are seeing?
Are your sun/shadow settings the same in both versions?
Versions 6.5 to 22
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Dell Precision M6800 - i7 4700MQ @ 2.40GHz, 16GB RAM, AMD FirePro M6100 (2GB), Windows 7 64bit