Issue: fails to retrieve global credential and thus fails SCM step

Description:

When executing the pipeline or using the snippet generator tool, global credentials are not found and thus the SCM steps fail. Credentials can be created from the dropdown provided for the SCM step at the pipeline snippet generator, but are later not listed in the same dropdown, though visible in the global credentials page.

We verified that credentials can be accessed in the pipeline using the command withCredentials(id).

Code statement:

checkout([$class: 'GitSCM', branches: [[name: '*/master']], userRemoteConfigs: [[credentialsId: 'github-secret', url: 'git@github.com:something/reponame.git']]])

Execution output:
15:15:00 Warning: CredentialId "github-secret" could not be found.15:15:00 Cloning the remote Git repository