Today I was working on the Customer Statement report to add a new field on the existing temporary table so it would be rendered on the report.
After changing the design and re-deploying de report I got an error when openning it.

The error message was: The report provide table doesn't contain the new field, therefore I re-compile, re-deploy, even restarted the AOS and it didn't work.

I had to finally restart the Reporting Services Server and it worked.

This is for sure a bug since you need admin provileges to do that, and normally this is not the case when you work on a client environment.