Applicable Versions: [1.4.1]
We have had reports that the ribbon bar footprint wizard icon can sometimes be absent in the PCB library editor.
The wizard is always accessible by a right click in the PCB Library panel (View | Library).
Another workaround is to invoke the wizard from the search box (top right of workspace), type in "wizard" and select "Tools > Component Wizard..." from the results.
This launches the footprint wizard and also restores the icon to the toolbar once the wizard is closed.