Alright, found the solution myself. Add this override to your qa-theme.php:
// override function vote_count($post)
public function vote_count($post)
{
// You can also use $post['upvotes_raw'], $post['downvotes_raw'], $post['netvotes_raw'] to get
// raw integer vote counts, for graphing or showing in other non-textual ways
$this->output('<div class="qa-vote-count ' . (($post['vote_view'] == 'updown') ? 'qa-vote-count-updown' : 'qa-vote-count-net') . '"' . @$post['vote_count_tags'] . '>');
if ($post['vote_view'] == 'updown') {
$this->output_split($post['upvotes_view'], 'qa-upvote-count');
$this->output_split($post['downvotes_view'], 'qa-downvote-count');
} else {
$this->output_split($post['netvotes_view'], 'qa-netvote-count');
}
// q2apro: show selected answer on user-answers list
if($this->template == 'user-answers')
{
$selectedanswer = $post['raw']['selchildid'];
$recentanswer = $post['raw']['opostid'];
if($selectedanswer == $recentanswer)
{
$this->output('<span class="qa-a-count qa-a-count-selected"></span>');
}
}
$this->output('</div>');
}