SYMPTOM:
When any user, including the Strategy 'Administrator' user, runs a Report Servcies document that contains a textbox whose contents span multiple pages, then it will create a page break before its contents are rendered when exporting to 'PDF' in Strategy Intelligence Server 9.x or 10.0.
STEPS TO REPRODUCE:
Follow the steps below to reproduce this issue in the Strategy Tutorial project:

CAUSE:
This is a known issue with Strategy Intelligence Server 10.0 and earlier versions.
ACTION:
The support of the field breakable by page was added to Strategy version 10.1. Please update to this version or higher to benefit from the fix.
WORKAROUND:
If exporting to PDF is not mandatory, the user can run the report Report Services document from Strategy Web and the display will not contain the page breaks, as the concept of 'page' is not applicable within this context.