Hi Laurin,
Greetings from Syncfusion Support.
We have checked your shared sample in which you have raised the event in individual item which is the cause for the reported issue, you need to add clicked event in root element. Please refer the following code and sample.
const onClick = (args: ClickEventArgs) => {
console.log(args.item.text + " clicked");
};
<ToolbarComponent clicked={onClick.bind(this)}>
Please try the sample and get back to us if you need any further assistance.
Regards,
Nevitha