Office 365 Now Flagging Some AuthnRequests Forced?

Tue Oct 10 15:47:04 EDT 2017

Either these just started showing up today at high noon, or I never noticed this flag being set before.

<samlp:AuthnRequest ForceAuthn="true"
    ID="_a186afb7-e2c0-4307-96b2-5de7df8b5fe1"
    IssueInstant="2017-10-10T18:56:41.728Z" Version="2.0" xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol">
    <Issuer xmlns="urn:oasis:names:tc:SAML:2.0:assertion">urn:federation:MicrosoftOnline</Issuer>
    <samlp:NameIDPolicy Format="urn:oasis:names:tc:SAML:2.0:nameid-format:persistent"/>
</samlp:AuthnRequest>

Count 28 so far.  Enabled forced as a workaround for now.  Anyone else see this?  Was this normal?  Am I nuts?
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