fixed -- not yet uploaded -- will be in next update.
A separate but related issue:
what's still not fixed that i'm not sure how to handle is the other side of this coin -- posting to a web page javascript that the page is closing if the user clears the search or closes farr.. 99.99% of the time this does not matter, but for some javascript things (like maybe tiddywiki), a script on a page wants to do something (or prompt user) when the user is leaving the page.
Update: Maybe i spoke too soon -- on testing it seems that the js unload event is indeed called when switching away from browser window, so that's good.