For some reason one of my players was able to see the whole entire map despite Dynamic Lighting being on, we double checked, triple checked it, everything was on the right settings. As of today however after switching from Firefox to Chrome it seemed to be working, once he re-used Firefox however the Dynamic Lighting seemed to be working again? The problem seems to have sorted itself out, but it seems like something that has a very random chance of happing as he was the ONE and ONLY player to have this effect.