Well, this is weird.
If you want you can look where the content is displayed:
customizr/parts/class-content-post.php
look for the method : tc_post_content
and you’ll see that is like this:
<section class="entry-content <?php echo $icon_class ?>">
<?php the_content( __( 'Continue reading <span class="meta-nav">→</span>' , 'customizr' ) ); ?>
<?php wp_link_pages( array( 'before' => '<div class="pagination pagination-centered">' . __( 'Pages:' , 'customizr' ), 'after' => '</div>' ) ); ?>
</section><!-- .entry-content -->
Looking at your source page code I can see:
<section class="entry-content ">
</section>
So what “fails” is the wordpress function the_content()
.
In my opinion there’s some plug-in which filters the_content. You can try disabling them all (e.g. sociable) and see if the issue still occurs.