I have a report with a Graph with BarSeries and DateTime X-axis and Numerical Y-axis. The Series has ToolTip that is displayed correctly in the Standalone Report Designer. However, the Html5 Report Viewer does not display the tooltips. The HTML element for the bars does not contain the needed attributes:

data-tooltip-title="Value" data-tooltip-text="10" data-role="tooltip"

and looks like this:

<path d="M588.32 51.51 L589.05 51.51 L589.05 242.89 L588.32 242.89 Z" fill="none" stroke="lime" stroke-width="2" stroke-dasharray="none" stroke-linejoin="bevel" stroke-linecap="butt"></path>