Windows 7 taskbar can show previews of all IE 8 tab windows. Moving mouse over previews can switch tab views in IE8. If applet contents are in an inactive tab, there are two issues:

1. Taskbar preview shows no applet contents.
2. hover mouse to the tab preview that has applet contents, there are no applet contents rendered in that tab frame. Applets rendered after click to make the tab active.

The issues happen only with the new out-of-proc java plugin. The old in-proc plugin works fine