event.target referencing element not attached to the DOM?

Hi,

I don't know if this is the correct forum or not, so please point me in the right direction if I'm blabbing in the wrong place.

To the issue at hand: Since updating to FF 15, I'm experiencing an issue where event.target in event handlers represents an element that is not the same element as the one found in the DOM (== comparison fails), but it seems like it's parent *is* the exact same element as in the DOM.

What I'm doing is intercepting click events on elements and then generating a (proprietary) search path for identifying the element (with or without ID attributes). This has worked fine before, but as of FF 15 I cannot verify that the search path represents the same element anymore since the element in the DOM != event.target.

Has anyone run into this problem or does anyone have any idea what the cause might be? Or a hint as to where I can find someone that has an idea?

Thanks!
/Jonatan