The keyboard navigation works fine in my flex application without JAWS opened. However, once I opened JAWS, several of the keys don't work anymore. For example, the popbutton's dropdown menu couldn't be opened with Ctrl+down arrow key; Up/down arrows in the dropdown list don't work.
It seems like JAWS applies a differ keystrokes for the flex application. But I couldn't find the detailed mapping online, any idea? (I could find the JAWS keystrokes for HTML and Windows application though)