I see that egg, thanks

the export is taking something else into accouint re the page background - for example in my case [print document] - the export comes in correct if the page has no shadow, but wrong if it does:

Click image for larger version. 

Name:	no shadow.jpg 
Views:	73 
Size:	29.2 KB 
ID:	125404

Click image for larger version. 

Name:	shadow.jpg 
Views:	88 
Size:	28.9 KB 
ID:	125405

so I can only surmise that something else in your [web] document settings is affecting the output...?

[I tried changing my document type but it made no difference, but it's probably more subtle than just that]

might even be affected by the version of inkscape - mine is 0.92.4 64bit

but FTR I get same in illustrator CS2