Ok now it's works check in the control panel (rebinding keys) if the left button of the mouse is unassigned (None). I don't know why but this button was set to none when i started the game. Just rebind this button.
Since i've an azerty keyboard, I've rebind the four keys to move the map (Z for UP, S sor DOWN, Q for LEFT and D for right).
The map goes dark and moving buttons doesn't seem to have an effect anymore.