Current behavior

The following demo should export the Charts to the generated pdf file, but it does not;
https://demos.telerik.com/kendo-ui/pdf-export/index

Expected/desired behavior

It should export all elements within the container. This works properly in older versions:
https://dojo.telerik.com/CfWcHUQK

From package "@types/kendo-ui": "2020.1.0" i found;

class Connection extends Observable {


        options: ConnectionOptions;

        dataItem: any;
        from: kendo.dataviz.diagram.Shape;
        sourceConnector: kendo.dataviz.diagram.Connector;
        targetConnector: kendo.dataviz.diagram.Connector;
        to: kendo.dataviz.diagram.Shape;

        constructor(options?: ConnectionOptions);

The constructor is not correct, it has to be like all example you propose: https://docs.telerik.com/kendo-ui/api/javascript/dataviz/ui/diagram/methods/addconnection

Please correct typings as soon as possible, it drives me in a use that doesn't works