Sorry for the late reply.The aircraft was set up for an auto land with both ap engaged.GS* was shown on the FO pfd,and ALT* on CPT pfd.Due to the autoland condition AP1 is master so it follows FD1 guidance.FO FD pitch bar shows an increasing pitch down demand.No warnings were triggered by any aircraft system.I ended up throwing it all away and flying a visual approach.
FD1 never captured the GS and remained armed.I was just glad we were not having to do this for a real autoland!