Are ongoing fetch requests cancelled after changing window.location?

I noticed that some fetch requests don't reach the server when I change window.location just after sending the request (location change is not inside the promise response handler).

I tested on Chrome browser

# util.js
function sendLog(payload) {
  const urlApi = `http://api.example.com/public/send-message`;
  return fetch(urlApi, {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json'
    },
    body: JSON.stringify(payload)
  }).then(response => {
    return response.json();
  });
}

# main.js
sendLog({
    project: 'FrontEnd-Card',
    countryId: country
}).then(res => {
    console.log(res);
});
window.location.replace(REDIRECT_URL);

I noticed this pattern: If network is fast, the log is successfully sent to the server If network is slow, the log doesn't reach the server.

Somehow redirection kills the outgoing request. Is this true ? Where can I find a detailed documentation about this behavior ?