Zorin 18 Education

Bug when opening the Software Catalog (open then close)
I re installed gnome, libsoup with no result

Hi and welcome.

Firstly, did you verify the integrity of the downloaded file by checking the sha256 checksum against the .iso? Did you use a Download Manager when downloading the .iso? What usb installer did you use to install Zorin Education? I have had issues in the past when installing using Balena Etcher - it kept freezing so I ended up putting MX-Linux 2023 KDE on a notebook for a family member and manually installed the Education apps. If you used Balena Etcher I would rewrite using Ventoy - best usb installer out there.

Welcome to the Forum!

Try it with sudo apt reinstall gnome-software