Environment variable not read correctly by github-enabled eclccserver in spawned ECL job

When a job is submitted to a github-enabled eclccserver, the environment variable configured on the eclccserver is processed correctly.   

This is the setting:

      <Option name="-Denvironment" value="'Alpha_Dev'"/>

and the code that reads this does:

      export    string      Name := #IFDEFINED(root.environment, 'Prod');

However, when a submitted ECL job spawns another WU against the same eclccserver target, the environment variable in the spawned job is not maintained correctly.