LibreOffice convert to html default charset=iso-8859-1

Hi,
Mabe I mistake, but in 2017-01-31 from terminal window LibreOffice convert to html utf-8 changed to iso-8859-1. I tested in multiple virtual servers and can’t iso-8859-1 change to utf-8.
There is my used commands:
unoconv --format html /0/bb.docx
unoconv --format html --export FilterOptions=UTF8,LF /0/aa.odt
unoconv -f html -i FilterOptions=UTF8 /0/aa.odt
soffice --headless --convert-to html --outdir /0 /0/bb.docx

and there result convert docx to html
Ąčęėįšųū9žąČĘĖĮŠŲŽ →
Ąčęėįšųū9žąČĘĖĮŠŲŽ
there source :

link text

@page { size: 8.27in 11.69in; margin-left: 1.18in; margin-right: 0.39in; margin-top: 1.18in; margin-bottom: 0.79in } p { margin-bottom: 0.1in; direction: ltr; line-height: 120%; text-align: left; orphans: 2; widows: 2 }

Ąčęėįšųū9žąČĘĖĮŠŲŽ

Thanks, Regards Rimantas