NW 7.1 CE problems triggering onAction event for Business Graphics?

I have ported an application that was running on NWDS 7.0 to CE 7.1. No problems with code compilation and on the web page everything is working fine in 7.1 except that I am unable to trigger the onAction event on Business Graphics (e.g., bar chart). In 7.1 the cursor is not even changing from pointer to hand when I mouseover on the bar legend as it does when I run the app in 7.0. Is this a server setting with CE7.1 or am I missing something else?