Steps to reproduce: 1) Open the bug URL (which is a test for bug 7323). 2) Drag the "drag me" URL somewhere. 3) Release it. 4) While the drag image is still retracting to the URL's original position, click inside the iframe. Results: ================= ASSERTION FAILED: [self _isTopHTMLView] (/Users/ap/WebKit/WebKit/WebView/WebHTMLView.m:5651 -[WebHTMLView(WebDocumentInternalProtocols) draggingUpdatedWithDraggingInfo:actionMask:]) =================
I can no longer reproduce this with r38816.