How do you add a widget to the canvas? There is no visible button. The 'Add Widget' option in the screenshot below gives you the list of widgets available. Clicking on a widget doesn't help either?
How to add a widget to canvas?
I connected my Macbook Pro to a widescreen monitor and the issue is resolved. There is a 'Add' widget button at the bottom of the widgets selection window. Sadly you cannot resize the window on Macbook Pro and would need a bigger screen to see the button.