New updates for Windows Virus & Threat Protection have been deployed by Microsoft. The version this issue was occurring in was 1.313.1817.0
I’ve tested the reported file on definitions 1.313.1822.0 and 1.313.1831.0 on 2 separate machines. It is not flagged to me anymore.
Users should get the update automatically when Windows next checks. If you’d like to update manually, then you can go to ‘Windows Security -> Virus & Threat Protection -> Check for updates (button)’.
If anyone experiences further issues, please file a ticket with as much information as possible (including your definition version) and we will look into it.