Lumen shadow not appearing around object

Development Rendering
,
9

Maybe it’s short-range AO. Can you try and toggle the showflag to see if it disappears?
ShowFlag.LumenShortRangeAmbientOcclusion 0

If so maybe dial:
r.Lumen.ScreenProbeGather.ShortRangeAO.ScreenSpace.SlopeCompareToleranceScale 0.9