Forces/relaxation are not working
apparently the relaxation scheme (and maybe the forces themselves) are not working:
during the relaxation, the forces and the energy increase, ie. it looks like the forces are applied in the wrong direction! additionally, the forces differ from the v26 version. Starting from pre-converged positions (in v26), there are rather large forces (0.0xx) present when one starts with v27. However, testing this further would require a working relaxation scheme and/or it might be related anyway.
resulting forces file: forces.dat
input file: inp.xml