Settings WP-CommentNavi

Can you try on the default theme with no other plugins activated?

Sorry I can’t help because I can’t reproduce this on my end https://lesterchan.net/wordpress_dev/2015/05/26/%D1%80%D0%BE%D1%81%D1%81%D0%B8%D1%8F/comment-page-1/#comments (at the bottom)

I am using the twentyfifteen theme on WordPress 4.3

This is the snippet of code I have on comments.php of twentyfifteen

<ol class="comment-list">
			<?php
				wp_list_comments( array(
					'style'       => 'ol',
					'short_ping'  => true,
					'avatar_size' => 56,
				) );
			?>
		</ol><!-- .comment-list -->

		<?php twentyfifteen_comment_nav(); ?>
		<?php if(function_exists('wp_commentnavi')) { wp_commentnavi(); } ?>