A security feature bypass vulnerability exists in Edge that allows for bypassing Mark of the Web Tagging (MOTW), aka 'Microsoft Edge Security Feature Bypass Vulnerability'.
https://www.tenable.com/blog/tenable-roundup-for-microsofts-june-2019-patch-tuesday
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1054