[phenixbb] Hydrogen adding and real space refinement

Dear All, I find when I add H in the PDB file, in a refinement by Phenix, there is no real space refinement step (rsrl). If I do not add H in the PDB file, there is the rsrl step in the refinement. Somebody told me it was because there was a bug in the Phenix I downloaded, somebody told me if H added, there would be no real space refinement. I myself cannot clarify it by reading documents. Will you please clarify whether no rsrl step after H addition was because of bug or because of H addition leading to no rsrl step? And why H addition can lead to no rsrl step? I am looking forward to getting your reply. Best regards. Smith