SOLVED: For anyone else having this problem, it only occurs when you are in conceptional view. Go back to wireframe view and you can then grab all grips. I battled with this for days and then suddenly realised. Why this is so I don't know but anyway, solved.

Hi, Is anyone else seeing this? If I create a region or a solid from geometry, as soon as I do, I can only snap to some grips. If I say create a square I can snap to all corners. If I turn it into a region I am only able to snap to two corners. If I explode the region I can then snap all corners.. I...