When using a shared library with a version specified by a label, it seems the plugin ignores the label and always pulls latest.

For example:

@Library('myLibrary@someLabel')

where "myLibrary" is added in Jenkins as a global library with the Modern SCM retrieval method, a default version "now" and "Allow default version to be overridden" set to true; the pipeline will pull the latest version of the stream instead of the one specified in "someLabel".