Opera table problem when multiple THEAD

Opera doesn't seem to render table row in order when multiple THEADs.

See table sample :

Head one
Body one
Head two
Body two

HTML Code sample :
<TABLE border="1">
<THEAD><TH>Head one</TH></THEAD>
<TBODY><TD>Body one</TD></TBODY>
<THEAD><TH>Head two</TH></THEAD>
<TBODY><TD>Body two</TD></TBODY>
</TABLE>