Cloned paths have no nodes

(tgb 1.7.3)
Using cloneWithBehaviors on a path does not copy the source path's nodes. Temporary workaround is to manually copy the nodes in script:

%clone= %path.cloneWithBehaviors();

      for (%i = 0; %i < %path.getNodeCount(); %i++)
         %clone.addnode(%path.getnode(%i));