Dictionary lookup disappears after a few seconds on observer.com
Created attachment 311530 [details] Patch
Created attachment 311531 [details] Patch
The /ideal/ fix would involve tracking what frame each content-relative subwindow originated from, and dismissing it if that frame navigates, but that is a lot of bookkeeping for little value, when this fixes what is likely the most common case.
http://trac.webkit.org/changeset/217566/webkit
<rdar://problem/32479621>
Shouldn't this be using the same code path as resetting input method state on navigation? See also: rdar://problem/13875766