Try something like this:
function getPDF(selector) {
var element = $(selector);
var buttonsToHide = element.find("button:visible").hide();
kendo.drawing.drawDOM(element).then(function(group) {
return kendo.drawing.exportPDF(group, {
margin: { left: "1cm", top: "1cm", right: "1cm", bottom: "1cm" }
});
}).then(function(data){
kendo.saveAs({ dataURI: data, fileName: "Reporting.pdf" });
}).always(function(){
buttonsToHide.show();
});
}