Telerik Reporting Angular Viewer is a wrapper of the pure Html5 Report Viewer that is a jQuery widget for displaying Telerik Reports. jQuery of version at least 1.9.1 is a must - Requirements.
We are aware of a problem that is similar to the described one. Here is the solution that worked for the previous cases we encountered - they were related to SignalR in an Angular application using Telerik Reporting. You need to remove the following code from the specified report viewer files:
window.jQuery = jQuery;
window.$ = jQuery;
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