well iam having a problem with GTK radiant 5.0, when ever I go back on the camera, my objects disappear and get gray. here is a example photo of a square
I'm not a mapper, but I have seen something like this before. not sure if its the same though. If you have two 3D objects intersecting, then only the outside parts are seen unless you zoom in to the object, or the view mode is set to wireframe. Hope that helps.
Turn of "Far Clip Plane" in the camera section under preferences.
yea that helps, thanks