Contributing to NiFi

[charles]

Hi,
 
I'm looking to make some contributions to the Apache NiFi project. The Apache 
Nifi documentation advises the reader to visit the NiFi's JIRA page to find 
tickets that are tagged as "beginner".
 
I've been to the site, but, I have not discover a way in the UI to filter the 
unresolved issues based on a 'beginner tag'.
 
I did report a bug 2 days ago (#2625), which I'd like to fix. How do you 
recommend I proceed?
 
Cheers,
Charles