FWIW, GoDaddy isn't the only site I've seen do this. I had the same issue a couple years ago when I tried to use Google Domains to find a domain for my website.

FWIW, GoDaddy isn't the only site I've seen do this. I had the same issue a couple years ago when I tried to use Google Domains to find a domain for my website. At the time I was trying a few and found, to my delight, that nothingofvalue.com was available. I started the process of purchasing it and then got scared when it came time to list my personal address for ownership. I stopped for about an hour to call my father to see if he would mind if I used his PO Box as the address. When I went back to redo/complete the registration, I was told the domain had been purchased by someone else. For the next year or two, I checked it periodically, just to see if anyone had actually built a page of it. Nope. Just squatting. I purchased nothingofvalue.org instead and have had it ever since. I also transferred the domain to Namecheap.