A TimePicker control will take all scroll events if the mouse cursor is over it, whether the element has focus or not, and prevent the scroll from bubbling up to the page. This prevents a page from scrolling as soon as the mouse cursor touches a TimePicker.
Using Kendo rect v5.1.0 in FireFox v98 on OSX. (Issue does not happen in Chrome)
You can view the problem in the demo page: https://www.telerik.com/kendo-react-ui/components/dateinputs/timepicker/
Just try to scroll down the view, and as soon as the TimePicker is under the mouse cursor, the page can no longer be scrolled until you move the cursor off the control.