SAML metadata fetch/base64 encoding issue

We observed a strange behavior while setting up a federated EntraID SAML provider. During configuration, the outcome of base64 encoded metadata string differs when using

Metadata URL

Metadata URL

from

Metadata XML

Metadata XML

. Seems that when using

Metadata URL

Metadata URL

there's an invisible symbol being added

77u/

77u/

. We did some tests and the SAML IDP configuration with the invisible symbol does not work.

SAML metadata fetch/base64 encoding issue

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