TT 5.2 /F option with relative path not working - Tera Term Ticket #57660 on OSDN

TeraTerm 5.2 document for /F option says If this value is not a full path, it is understood as a relative path from %APPDATA%\teraterm5\

I made a copy of the TERATERM.INI file to modified new file to %APPDATA%\teraterm5\TERATERM_AM.INI and make sure it's saved in UTF-16LE with BOM format
I then changed 3 options in TERATERM_AM.INI

AutoWinClose=off
CipherOrder=MKN>H:J=G09
LogLevel=200

if I launch like this, only AutoWinClose takes effect. CipherOrder (reported by SSH server) and LogLevel (TTSSH.LOG doesn't have detailed content) doesn't do anything. if I add /ssh-v to command then LogLevel works, but CipherOrder still doesn't work

"C:\Program Files (x86)\teraterm5\ttermpro.exe" 10.10.227.1:22 /F="TERATERM_AM.INI" /ssh /2 /auth=password /user=guest /passwd=guest

if I launch like this with full path to file, then AutoWinClose, CipherOrder and LogLevel all take effect

"C:\Program Files (x86)\teraterm5\ttermpro.exe" 10.10.227.1:22 /F="%APPDATA%\teraterm5\TERATERM_AM.INI" /ssh /2 /auth=password /user=guest /passwd=guest