This question has been raised before but I haven't seen any useful answers.
When using pie charts in Flash mode, the browser cannot scroll (using scroll wheel) while the mouse pointer is over on eof the charts. If you move the mouse pointer out of the chart, the browser can scroll as normal.
This only seems to affect pie charts in flash mode; line and column charts in Flash are fine, and Javascript charts are fine.
Tested in Firefox 27 (Mac), Chrome 32 (Mac), IE8 (Win 7), all the same (FF and Chrome work intermittently if you scroll VERY slowly, any normal scroll speed and they stop).
Safari 6.1 on Mac is fine.
Version 3.3.1-sr3.21100
The problem can be seen in the demo gallery pages: http://www.fusioncharts.com/explore/pie-doughnut-charts
Open 3d Pie Chart. When viewing the Javascript version, with the mouse over the chart, the scroll wheel scrolls the page behind as expected. Switch to the Flash chart and the page cannot be scrolled.