New domain registration on route53 - [Only ASCII characters are allowed] error

Hi! I've just tried to register a new domain name. Application went smoothly as it always has, but a few minutes later I see this error repeated 4 times.

[Only ASCII characters are allowed]

I confirmed the domain name string is ascii only with this little bash code:

❯ echo "***************.jp" | grep -qP '^[\x00-\x7F]$' && echo "ASCII only" || echo "Contains non-ASCII" ASCII only

AWS is not contacting us, and the domain now comes up as "already taken" on other providers.

When I dig/whois, the domain seems to be registered to our name. But since the domain is not visible in "Registered Domains" menu of Route53, we have no means to set routing on that domain.

Is this possibly an AWS bug?