This works fine. In debug mode in version 18, I notice that I have to clear the browser files cache before it works. I.e. Run in debug model, then clear data , then refresh and you then see the tooltips. (This is in Chrome.) In version 19, I don’t have to do.
I have raised a word wrapping issue on the main Vaadin forum - which is also an issue with v19.
[https://vaadin.com/forum/thread/18566041/text-wrapping-using-vaadin-componentfactory-tooltip]
(https://vaadin.com/forum/thread/18566041/text-wrapping-using-vaadin-componentfactory-tooltip)