The Undo function is mapped to the AZERTY keyboard configuration instead of the QWERTY.
Actually, the undo function is assigned to the CTRL+W shortcut instead of the CRTL+Z. Crtrl+Z close the project.

It's really annoing, as the undo function is a convention on Ctrl+Z on all QWERTY keyboard. It's occus in the french version of the new Adobe Captivate.