Repost bug contradicting image moderation settings

My feeds are set to G only, and although I saw this image in Discovery when it was initially uploaded with a G-rating, it was later changed to M. The original creator's post with the image no longer shows up in my feeds, but in my Following feed, someone I follow reposted it and that still shows up for me. This happens both on the mobile web version, and the desktop web version, as shown.