BSP Brush disappears from Outliner and is undeletable

Hi there,

I’m having an issue using BSP Brushes in the Unreal Editor using 4.11.2

I have an edited and extruded BSP with Materials on most surfaces. I can select the surfaces of the BSP Brush, but no more outline and Gizmo appears. The BSP Brush has also disappeared from the World Outliner. The surfaces cannot be deleted, but I can hide them for as long as I’m using the Editor.

Already asked our porgammer for help, and he also noted, that the output log doesn’t react, when you select a surface of that BSP.

The BSP also remains in the scene, when I’m building the geometry. And it’s still there even thow I restarted the Editor.

I have no clue as to when this is occuring or how to exaclty reproduce this yet.

Best regards
Gil