2018 Releases
This article lists the breaking changes in the Kendo UI 2018 releases.
Kendo UI 2018 R2 SP1
ComboBox
In the ComboBox, the Tab key now acts as Enter. Upon pressing Tab, the ComboBox selects the item and, if the list popup is open, closes the popup. As a result, the highlighted item will be selected and a subsequent pressing of the Tab key, both in a cascading ComboBox or a different element, will accurately focus the next focusable element. In this way, the focusing order is also kept.