Hi @Claus · Thank you for reaching out.
This is a known issue with the page layout versions (2.1.0 and 2.1.1) and is already reported to the product team. Please try using page layout version 2.1.2.
If you still face this issue, as a workaround you can use page layout version 1.2.0 or lower version.
If you are using User Flow, you can use Standard User flow which supports layout version 1.2.0 and lower versions.
If you are using Custom policy, you need to update Data URI parameter under <ContentDefinition Id="api.signuporsignin">
to use version 1.2.0 as shown below:
<DataUri>urn:com:microsoft:aad:b2c:elements:contract:unifiedssp:1.2.0</DataUri>
Read More about page layout versions: https://learn.microsoft.com/en-us/azure/active-directory-b2c/page-layout
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