Drop shadow missing when exporting a demo html

[ivg-design]

So i have an animation that has several elements with drop shadow, but when exporting a demo html file, when viewed in the browser the drop shadow is missing - not cut off but actually missing... I can see it in the bodymovin preview, but not in the browser... when i preview using lottifiles player, its there, on lottifiles website also there... but not with the html demo file...