Typography setting for Navigation Menu not working as expected

Hi there. This is my first post on this forum and I am a new WordPress user. I am using WordPress 6.1.1. I am having trouble to make my Navigation Menu in my header work as I wish. If you look at the home page of my site, https://descubriendolahacienda.art/, you will notice that the Navigation Menu ( presently a single page to link to ) is showing each first letter of the page to be linked to ( Hacienda de la Mata ) as uppercase, so it is showing Hacienda De La Mata rather than Hacienda de la Mata. In other word, it acts as if the Typography Letter Case setting was set to Capitalize. But it is not. My setting is None. So what am I missing ? I made some screenshot of the FSE : https://snipboard.io/KEb8lB.jpg : view of the header blocks levels https://snipboard.io/OlN28J.jpg : view of the header in the Visual Editor https://snipboard.io/bQnY4W.jpg : view of the setting for the Page Link block inside the Navigation Menu block. I have set the Uppercase setting to None for all the related blocks in the chain : Page Link, Navigation Menu, Row, Row, Group How to fix this? Best regards to all Jean-Christophe