Reply To: metabox removes multiple text field with html links inside

There is another bug with this code. Put in #1 field "one", then put in #2 field "two" and Save post. Now it's ok, you see 2 fields https://i.ibb.co/Nj1MtZT/11.png. Then change "two" for "Two" (big letter https://i.ibb.co/gRgq4gq/22.png) and Save post - it's gone