https://support.microsoft.com/en-gb/topic/kb3043889-fix-the-chart-in-ssrs-2012-or-ssrs-2014-report-is-not-updated-correctly-when-you-update-the-parameter-in-the-url-of-the-report-a140e585-3d60-252d-4522-480a8cceb04f
KB3043889 - FIX: The chart in SSRS 2012 or SSRS 2014 report is not updated correctly when you...
Fixes an issue that occurs when you update a report in SSRS 2012 or SSRS 2014 in SharePoint integrated mode.