okidoke
We finally nailed this little PITA bug and are now using a proper skybox mesh, but works very well.
Its independant of the far clip distance, doesnt render any SSAO and so far has not switched the textures when using reflections in the engine....
It also still works with the exposure settings from the render panel options. Hooray!!
Plus, you can turn the skybox off to get a single colour background or swap to the Skydome TOD system.
Another cool feature we can implement now, is the ability to rotate a skybox to match your scene. This will be added after this update i thinks
It was a strange error and must be a broken core for the older material system but we got around it by using the same texture that was already on, rescaling it to match new textures and then blit the contents from the new skybox textures into the current one so it doesnt have to change. It works well and seems fast and hasnt skipped a beat yet