@yong-min-lee,
Thanks for sharing the sample project. We will look into the issue and get back to you at the earliest. Meanwhile you can refer following tutorials on auto-refresh/reloading a part of webpage.
1. Auto-Reloading part of webpage every 5 seconds.
2. Auto-Refresh
3. Auto refresh page on data change – Stackoverflow
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Priyanka M S
Team CanvasJS