When a date range is just one day, it only shows '12a' as a node on the calendar. 【help】

<img width="1811" height="807" alt="Image" src="https://github.com/user-attachments/assets/994a3cbb-d945-46b4-9e11-5f30d5d933f6" />
Should it show a rectangle instead of a node here? 'Dec 11' means a whole day, not a instant at 12:00 am

Thanks very much for your help!