If i use a timepicker in a page with the hamburger-menu visible, after clicking on the timepicker the hamburger is not clickable anymore. It's easy to reproduce: just open your example page for the timepicker component, lower the page width so the hamburger icon is visible, click on any of the timepicker examples, then click again on the hamburger. From now on, the hidden menu won't open and the mouse pointer won't change moving on the icon. This happens with header fixed top, non fixed top, input inline etc. After clicking on ANY of the timepicker examples there is no way to access the menu again other than refreshing the page.

TimepickerPage