We are facing abnormal behavior of the Reporting tool on version 26. Once the report load the pagination button on the tool bar does not work as expected i.e. move last move first button action does not work… page by page button partial work i.e. does not move to last page (total -1) page work. We are facing these kind of issues.
Hi Abdul and welcome to the forum,
Could you post a couple of screenshots so we can see where exactly this issue occurs for you? There are a couple of different viewers - knowing exactly where to look for the problem will make it easier for us to help you troubleshoot 
.