Steps to Reproduce

run the attachment in FF and other browsers
double click the divs with the left and right mouse button
on a successful right click a '!' is added to the text inside the div

Actual Result

only FF a double right click is detected using the zk onDoubleClick listener

Expected Result

no double right click fired

Debug Info

the 2 other labels use jq.dblclick(...) or element.addEventListener('dblclick' ...) which don't trigger an event.
Something in ZK's client engine code triggers an unexpected onDoubleClick event