How to fix land appearing as water?

Hope this is the right place to post this.

So I found this island that displays as water. I see that there is an Island area there already but don’t understand why it is still displaying as water on the rendered map. How should I fix this?

It’s missing the natural=coastline tag. When you zoom in real close, the changes would appear probably in an instant. However, you might notice it might take between days and probably up to a month, to see the said “island” to appear when you zoom out.

That helped me. Thank you for answering. I had the same problem.