PIUIUX Navigation Bar - New Plugin by Andrea Purracchio

The issue was indeed with the SVGs downloaded from https://materialdesignicons.com .

By the way, so that other users do not make the same mistake as I did, the SVGs downloaded from https://fonts.google.com are OK.

Thank you @studio.purracchio for your responsiveness :slight_smile: .

How to get a SVG icon from materialdesignicons.com

It works. Bye.