Hi Christian,
I hope you are well today and thanks for posting here.
I could confirm the issue on my test site therefore i have notified the theme developer about it so that it can be fixed.
In the meanwhile you can resolve the issue by editing the following Dazzling theme files.
Change the code in the following dazzling theme file on line number 231
/dazzling/inc/extras.php
Before Editing :
function dazzling_setPostViews($postID) {
$count_key = 'post_views_count';
$count = get_post_meta($postID, $count_key, true);
if($count==''){
$count = 0;
delete_post_meta($postID, $count_key);
add_post_meta($postID, $count_key, '0');
}else{
After Editing :
function dazzling_setPostViews($postID) {
$count_key = 'post_views_count';
$count = (int)get_post_meta($postID, $count_key, true);
if($count==''){
$count = 0;
delete_post_meta($postID, $count_key);
add_post_meta($postID, $count_key, 0);
}else{
Change the code in the following dazzling theme file on line number 45
/dazzling/inc/popular-posts-widget.php
Before Editing :
$recent_posts = new WP_Query(array('showposts' => $number, 'ignore_sticky_posts' => 1, 'post_status' => 'publish', 'order'=> 'DESC', 'showposts' => $number, 'meta_key' => 'post_views_count', 'orderby' => 'meta_value'));
After Editing :
$recent_posts = new WP_Query(array('showposts' => $number, 'ignore_sticky_posts' => 1, 'post_status' => 'publish', 'order'=> 'DESC', 'meta_key' => 'post_views_count', 'orderby' => 'meta_value_num'));
Please note you are making changes in the theme files therefore you have to make these changes again after theme updation as changes made in the theme files get lost on theme updation.
Best Regards,
Movin