Status: Resolved (View Workflow)
The Warnings plugin (and others) are making concurrent builds finish one after the other, as opposed to the shortest time possible.
For a lot of builds the "new" issues is meaningless as there is no linear relationship (an older build could be based on newer software - especially in the case of building multiple branches - or gerrit code review builds!)
It would be nice if there was an option to skip this entirly so concurrent builds didn't block on previous builds finishing before they finished.
See the URL for the full mail thread.