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Auto sign in triggers aren't being handled correctly #5018
The recent changes to allow the external authentication servers to trigger a login contained a logic issue that prevents auto login triggering for the AD provider.
The issue only manifests because the AD provider falls into an edge case gap between the providers that have forms auth and those that don't (it can be either depending on whether you've allowed forms auth specifically for AD).
While investigating I also found an issue where if the AD provider and a single other OIDC provider where enabled, along with Auto Login then the UI would trigger auto login on the AD provider.