It would be nice if you could hold “Shift” while editing BSP Geometry in the perspective view. This would allow you to pan/slide your camera while moving vertices.
It’s possible to do this when moving Brushes, blocking volumes, or static meshes, but not possible while editing geometry.
We appreciate your feature request as it helps us improve. I have made your suggestion aware to the developers and the actual request can be searched with the tag “UE-6084.” Thank you again for your time and let us know if you have any further requests or questions.
