Very long highlighted snippets with some 'query_string' queries

When running a 'query_string' query containing quotes, e.g. "goodluck
jonathan", highlighted snippets are often very long. It seems that the
snippetting starts in the right place but doesn't close properly, pulling
in the rest of the field. Here is a recreation script that illustrates the
problem: https://gist.github.com/2843912

What am I doing wrong here?

I'm experiencing the same problem. Elasticsearch 0.90.12.
Don't you know, will the issue be fixed somewhen?