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Please test to use Telerik Reporting R2 2016 SP1 as there are changes in the paging mechanism which may resolve the issue.
In order to investigate the issue further, elaborate which version of Telerik Reporting is used and how to reproduce the problem. You can post the code for generating the report and sample data in CSV format which will allow us to create a demo locally.
Feel free to open a support ticket and send us the requested information there.
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