Then I think it is necessary to report this to the main CE developers, as this bug can cause problems even without using VS10.
Because the player sends HDR without tonemapping to the TV, but prescribes MDL 1000, but if the TV uses MDL to output HDR to the screen, then there will be a problem with wrong tonemapping, but by the TV itself.
And taking into account that Ateme library encoded about 40% of all HDR video, the problem will be visible on many movies with MDL4000.