RTL rendering of items is not supported. RTL support is included within TextBox items - Report globalization
My suggestion is to change the layout and use the Band Report Wizard
to create a report with grouping information occurring at top of each group. You can style GroupHeader/FooterSection sections
to make them distinguishable where they start and end. Group sections have also properties like PrintOnEveryPage and PrintAtBottom that can be used.
I hope this helps.
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