I have discovered on a world I have recently created in survival ores aren't dropping the materials I need to enjoy the mod properly. When taking trips mining I find the ore's almost everywhere and all I seem to get is experience, I thought I needed a certain tool to mine this until testing.

Mobs in the world are hardly to be found I am unable to enjoy the hunt of killing Cybermen and Daleks. Even the normal mobs are unable to be seen.

Tell me if this is happening to you. 

Known bug