[Wordpress issuses] mybeautfulthings on "No arrow to show a reply has been made"

I've lost the arrows that show when I've replied to a comment. I can see my reply if I go to the post.

Has WP stopped showing them or is this just a glitch for me?

Thank you in advance for your advice/help!

The blog I need help with is mybeautfulthings.wordpress.com.

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