- call UpdateSectorRenderList from LinkToWorld as well, because this can be called from outside the actor's Tick function.

src/p_map.cpp

@@ -6246,7 +6246,7 @@ void P_CreateSecNodeList(AActor *thing)
 void AActor::UpdateRenderSectorList()
 {
 	static const double SPRITE_SPACE = 64.;
-	if (Pos() != OldRenderPos)
+	if (Pos() != OldRenderPos && !(flags & MF_NOSECTOR))
 	{
 		sector_t *sec = Sector;
 		double lasth = -FLT_MAX;

src/p_maputl.cpp

@@ -499,6 +499,7 @@ void AActor::LinkToWorld(bool spawningmapthing, sector_t *sector)
 			}
 		}
 	}
+	UpdateRenderSectorList();
 }
 
 void AActor::SetOrigin(double x, double y, double z, bool moving)