No browser integration on Zorin OS 18 (Ubuntu 24.04 Base) - Vivaldi/Brave

Thanks to Brendan from 1Password I've found the solution and I'm going to share it here if someone should encounter the same issue.

This is the "magic" command to write in the terminal:

sudo mkdir -p /etc/1password && printf "vivaldi-bin\nbrave-bin\n" | sudo tee /etc/1password/custom_allowed_browsers > /dev/null

I hope it helps