IP recorded as updated but IP remains the same. Is this the expected behaviour?

[mixpc]

ddns-updater records a new timestime every 10 minutes (ok) even though the ip address has not changed.

This occurs when domain is set with an asterisk *.website.com

When domain is set with no asterisk web.duckdns.org even though it is a wildcard ddns eg one.web.duckdns.org two.web.duckdns.org .
three.web.duckdns.org then ddns-updater works as expected and does not record nor notify the same unchanged IP

The expected behaviour is that, if there is no ip change, no new record with a new timestamp should be created, and so no notification.

In Ntfy the notification reads:

DDNS Updater
any.website.com changed to 1.2.3.4

I get that very same notification every 10 minutes. It's not the frequency, but the repeated message with no ip change.

name: ddns-updater
services:
  ddns-updater:
    ports:
      - 8000:8000/tcp
    volumes:
      - './updater-data:/updater/data'
    environment:
      - SHOUTRRR_ADDRESSES=ntfy://ntfy.sh/topic
    image: qmcgaw/ddns-updater
    container_name: ddns-updater
    restart: unless-stopped

config.json

{
  "settings": [
    {
      "provider": "namecheap",
      "domain": "*.website.com",
      "password": "12345"
    },
    {
      "provider": "duckdns",
      "domain": "web.duckdns.org",
      "username": "username",
      "token": "67890",
      "ip_version": "ipv4",
      "ipv6_suffix": ""
    }
  ]
}

config.log

{
  "records": [
    {
      "domain": "web.duckdns.org",
      "owner": "@",
      "ips": [
        {
          "ip": "1.2.3.4",
          "time": "2025-11-13T06:33:16.998367365Z"
        }
      ]
    },
    {
      "domain": "website.com",
      "owner": "*",
      "ips": [
        {
          "ip": "1.2.3.4",
          "time": "2026-03-26T18:42:39.0336334+01:00"
        },
        {
          "ip": "1.2.3.4",
          "time": "2026-03-26T18:52:38.45342288+01:00"
        },
        {
          "ip": "1.2.3.4",
          "time": "2026-03-26T19:02:36.354763986+01:00"
        },
        {
          "ip": "1.2.3.4",
          "time": "2026-03-26T19:07:36.933674724+01:00"
        },
        {
          "ip": "1.2.3.4",
          "time": "2026-03-26T19:17:38.306807006+01:00"
        },
... and so on...

Thank you in advance!