why does the env_glow entity when in game, from far away its not very bright, but depends on how you look at it or when you come close to it, it just all of a sudden turns on, it just switches on brighter when you get close to it?

This is for the specialist mod. the properties are render fx:constant glow, render mode:glow, scale:2

Also this glow is being seen through a func_wall that is render mode:texture, fx amount:225, so its a bit see through.

When the env_glow is not being seen through the func_wall its fine.

Anyone know the reason why an env_glow being seen through a func_wall has this affect and can it be fixed?(apart from deleting it)