title: Vaadin 7.7.14 ComboBox dropdown mouse scroll changes selected element instead of scrolling pages
body: <p>After migrate to vaadin 7.7.14 comboBox dropdown mouse scroll changes selected element instead of scrolling pages
  I found this related post (<a href="https://stackoverflow.com/questions/59818787/how-to-scroll-page-instead-of-item-in-vaadin-combobox/70023250#70023250">How to scroll page instead of item in Vaadin ComboBox?</a>), but without a solution.
  Can you clarify please if this is an expected behaviour or is a vaadin framework bug or exist a way to configure combo box component?.</p>