Shared Activation Accounts for MS Office/O365 Apps not working after Windows 10 2004 Update

I’m wondering if anyone has run into an issue where users with shared activation accounts for MS Office have not been able to signin to onedrive/office/other O365 apps after their windows 10 machine was updated to 2004? It doesn’t seem to matter if it’s zscaler client connector v1.5.2.7 or v2.1.2.81, we get the same results. When we disabled the zscaler client connector and set an explicit proxy in the browser, the issue was resolved. Has anyone seen this behavior and can explain what’s happening?

No but here to follow. We’ve been struggling with this for over a year.