Did you
again disable AHH ?... Please, verify that "Advanced" -> "Character" -> "Use Avatar Hover Height" is checked, else (or if in a SSB sim without AHH support, but this should not happen since SL got both SSB+AHH now and OpenSIM grids don't (yet ?) have either) the viewer makes use of the (mod-ok) shapes Hover Height parameter to implement the @adjustheight feature, and thus resets that parameter to 50 (=0cm offset) on login...