Please test to reset all Docking and Anchor properties of items. You can use PageFooterSection or GroupFooterSection|ReportFooterSection (PrintAtBottom) to place content at the bottom of a page.
Note that if content cannot be gathered on the a single page, it will be split between pages ignoring the KeepTogether property - Understanding Pagination
If you need further help, please open a support ticket and send us a demo report illustrating the problem and the current settings.
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