When I create an HTML report that includes charts, and the question is an array, the chart of each sub-question reports accurately. BUT when I click on the pdf export button for each chart there, regardless of which sub-question I export to pdf, it always exports the chart data from the first sub-question in the array.
E.g. Question 1 is an array, with three sub-questions. HTML report correctly shows different data and chart for each question. Click on pdf export button on each chart for ANY sub-question, and it exports the data and chart for the first sub-question instead.