Material Screenshot:
A planar reflection effect is present only in the editor viewport, but it is absent when in “CinCameraActor” or upon clicking “Play”.
PostProcessVolume Screenshot:
The project settings have enabled “Support global clip plane for Planar Reflections”.Trying to change the Material Lighting Mode to Surface Translucency Volume or Surface Forward Shading, and enabling Planar Reflections, all had no effect.