Hi Joe. When I replied on your previous, I tried adding the link to open in a new window and when I tried to publish or preview the post, it said that I couldn't add 'rel' tag. As I'm on my iPhone, I put Safari in desktop mode to get the full editor controls to have a look at the source code, it automatically added rel="noopener" to the link code. I removed it and tapped on Save. But it still came up with the same error when I tapped on publish and I looked at the source code again and rel="noopener" was back in the code. So I changed the link to open in the same window, and it let me publish without any issues. So it sounds like rel="noopener" is only added when you add a link to open in a new window for some reason.