ArcGIS Online can't display folded WMS item properly

[BrandonGuo]

I have a WMS link that includes multiple layers in a folder. When adding this WMS link as an item in ArcGIS Online, I must select all layers; otherwise, it won't display. The link works fine when directly adding in Map Viewer, but I need to add it in Scene Viewer; the only option is to add the WMS layer as an item.