Layer blending modes need to be supported when exporting jpgs, pngs, pdfs etc...
Currently when trying to export a preview JPG or cut assets, if an asset layer uses a blending mode the exported file will ignore the blending mode and revert it to its original state.
Example, if you have a dark blue background color and want to create a glow with a white circle with a blur, setting the blending mode to overlay will change the color of this white glow to a lighter blue color of the background color - when exported to jpg or png it will appear white.
Basic functionality that is kept when saving/exporting from photoshop. Should be the same in XD.