Of course I have another browser handy: Microsoft Edge, always in my computer! In that case the problem is not presented and the site is working as planned; I can use it as an alternative

The platform is Windows 11; the browser is Google Chrome

Hello, a few days ago the problem was fixed, but today it came back again!

Here's a picture to make you understand the problem!

I have this same problem on www.ttsdemo.com.