WindowsUpdate log file usind version 1.40.520

Here we go again as my WindowsUpdate log file is changed from ANSI to UNICODE and nothing can be read in it now as everything is scrambled again. This version and 1.39 change this setting to Unicode in the encoding section under save or save as. I have to uncheck the checkmark under system and windows log files to keep my windowsupdate log readable in English. Why had all previous versions before 1.39 never changed encoding setting and kept it at ANSI NOT UNICODE? If I want to clean windows log files under system I have to go back to 1.38 or earlier versions. Again why was this changed? Am using windows xp home edition service pack 2.