When using the Kendo UI Toolbar widget together with the Tooltip widget, the following problem occurs:
In this DOJO, I have created a toolbar that contains a splitButton with several sub-items. The first sub-item has a title attribute that was set using the attributes option. The tooltip was configured to be active for all items with title attributes. As you can see, the active-styling is applied to the first sub-item as soon as the user hovers over it, although the item is not active an has not been clicked or executed in any other way. This does not happen for the other sub-items - they do not have any tooltips.
The wrongly added styles originate from the .k-active class that is added as soon as the tooltip becomes visible.