Hi,
This is a bug that has been around for a while, but I am currently experiencing it on Mac OS 10.7, Java 6, ELAN 4.2.
Basically if I have a popup on the screen (i.e. hover over an annotation, search result etc) and I switch applications using the key combo command-tab (or other key-combos that switch applications), the pop-up remains on screen, after ELAN looses focus.
This wouldn’t ordinarily be a problem, except that the popup is layered above all other applications (even the screen saver!). Clicking on the popup pulls focus back to ELAN.
Cheers,
Tom