Maybe we can get a feature to allow screenshots/images to be attached to reports in the future to help you troubleshoot this.

I’ve seen some posts in the past not tagged, and it’s most noticeable when I have NSFW posts set to blur; and I’ll get that one stray post that doesn’t show up as blurred and is missing the NSFW tag. So far, it’s only happened twice in about a month. Granted, the first time it was the same user posting the same image in multiple communities, and I’m pretty sure they just weren’t tagging the post correctly.