RosettaAntibody3 - How can I model an extended H3?

I am using the RosettaAntibody3 workflow outlined here: 

Everything is "working" when I use the command:

antibody_H3.linuxgccrelease \
  -database $ROSETTA_DATABASE \
  -s /input/TB184-140-0.relaxed.pdb \
  -ex1 \
  -ex2 \
  -extrachi_cutoff 0 \
  -out:file:scorefile /output/my_antibody_h3.score \
  -nstruct 1

and based on the documetation, I am expecting the final output to have a extended (non-kinked) H3. 

However, the output of the run shows extended?: False:

////////////////////////////////////////////////////////////////////////////////
///                          Rosetta Antibody Info                           ///
///                                                                          ///
///             Antibody Type:  Camelid Antibody
///             Light Chain Type:  unknown
/// Predict H3 Cterminus Base:  NEUTRAL
///                                                                          
/// H1 info: 
///            length:  10
///          sequence:  GNXXXXXXXMG
///     north_cluster:  H1-13-7
///         loop_info:  LOOP start: 25  stop: 34  cut: 30  size: 10  skip rate: 0  extended?: False
///
/// H2 info: 
///            length:  16
///          sequence:  SXXXXXXXXXXXKG
///     north_cluster:  H2-9-2
///         loop_info:  LOOP start: 49  stop: 64  cut: 57  size: 16  skip rate: 0  extended?: False
///
/// H3 info: 
///            length:  17
///          sequence:  RVXXXXXXXXXXYE
///     north_cluster:  H3-19-6
///         loop_info:  LOOP start: 97  stop: 113  cut: 98  size: 17  skip rate: 0  extended?: False
///
////////////////////////////////////////////////////////////////////////////////

Does anyone know how to force RosettaAntibody (antibody_H3.linuxgccrelease) to model a extended H3?

I have also tried adding the flag -extend_h3_before_modeling with no change.