I want to try this, do I need to change the lemmy domain to my own instance url? (if this is a double comment, I tried it from my own instance, but can’t see it on my alt. If someone can see this 2 times, I’m sorry.)

Yeah, I only see this comment when I’m actively putting the link of your comment in the search on my instance.

I saw your comment via my alt on lemmy.ml.

This looks like a serious issue!