HTML5 Download maps on the fly including lighting scenario streaming levels

While Im trying to use the “Download maps on the fly” feature to download and stream levels, everthing works fine but if I nominate one of the maps as a “Lighting Scenario map” then I’m getting this fatal error at runtime:

Project file not found: …/…/…/ProjectX/ProjectX.uprojectLowLevelFatalError [File\Build++UE4+Release-4.15+Compile\Sync\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading.cpp] [Line: 2916]
MapBuildDataRegistry /Game/Level_Streaming/MapX_BuiltData.MapX_BuiltData: Serial LowLevelFatalError File\Build+

It seems the package still tries to load a BuildData lightmap as per map which is not desirable when you have a lighting scenario map to store all lightmap data.

Is it a bug? is there any work around?