Hi @Gui Xiong (South Western Sydney LHD),
It seems is a known issue and has been fixed in below release, you may upgrade it for a try.
16.0.8564.33454, 2023/06/13
(Product Version: 16.0.1114.11)
- Introduced new Accessibility property that lets report authors to add accessible headers to tables and Heading levels to text boxes.
- Fixed setting calendar days to a single day for monthly schedules. See Release notes for SQL Server Reporting Services (SSRS) 2017 and later
Regards,
Zoe Hui
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