Hello Raymond,
Yes, this is the current solution to resize the Calendar component. We have already logged a bug in our themes repository related to resizing the component by applying width: https://github.com/telerik/kendo-themes/issues/1194.
Once we fix it, we will update the status of the issue. I'm sorry for the inconvenience.
Let me know if I can help further.
Best Regards,
Silviya
Progress Telerik