Hello,
It is possible that there are some missing CSS for the vote and comments.
You can activate temporally the style "default" in HikaShop in order to get the HikaShop 2.6.4 CSS file (and all his rules).
That file is there to provide a retro-compatibility.
Afterwards, if you think there are some errors in the HTML view ; we would need to have an access to a page with the problem in order to see it directly.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.