Seems its something else then. You sure you didn't miss something else in logs ? Also did you try forging a request yourself to authentik to see what it would answer from fluxer's container.
Edit: Forgot to mention it but I have Authentik (2026.5.3)
Also check that the field email_verified is set to true in authentik response (you can previsialize it in Provider settings) If no either create a Property Mapping or set the field true for you users.
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Comment by @Buco7854
email_verifiedis set to true in authentik response (you can previsialize it in Provider settings) If no either create a Property Mapping or set the field true for you users.