Export SVG changing some objects black

Hello,

I recently started having this issue that when I export a design as an SVG, some of the objects are losing their opacity setting, blends are not working, and some white objects seem to just be changing colour to black.

It seems to be caused by a recent update because the issue just started, and I have tried exporting a design that I previously exported without issue, and it is happening there too.

Here are some pics.

The design in Illustrator (downloaded from Shutterstock):

Recent export as SVG:

more examples:

I have made edits to the design (swapping people in the design), but as you can see from the people who were unchanged, the issue is not even on the same objects every time, even though I have made no changes at all to those characters. All I have done is pasted in new people from other designs.

This particular EPS file exported as SVG just fine on February 4th, and this is not only happening to this design - any design I try to export as SVG is having this issue.

Is anyone else having this problem or know what the fix might be? Is it a compatibility issue due to a recent update? Will there be a fix?