When ever i load up a new world it instantly turns every block black and the water turns grey for no apparent reason. It seems to only happen when i change what is in my hotbar.

When ever i load up a new world it instantly turns every block black and the water turns grey for no apparent reason. It seems to only happen when i change what is in my hotbar.
1. Change items in hotbar
2. everything turns black
3. The actual version is 1.7 and above. not 1.2.5