Defender gives false positives on Wordpress Core

Hi, for some reason Defender is giving false positives on all Wordpress Core files, which results in a staggering 700+ "issues". Now I'm as OCD'd as any webdevelopers So I can't stand that bubble showing 700+ issues.

Disabling, enabling and rescanning doesn't solve the issue. Clean installation of the latest Wordpress version also doesn't work (by the way, I update by installing locally and then copy the files through ftp). The strange thing however is that I have a number of sites connected with WMPUDEV and Defender, and the issue only happens on two of them, not on the other ones. But I use exactly the same method of downloading and installing a clean wordpress install.

Any suggestions would be appreciated!

Cheers
Emiel