54960 2011-02-22 08:13:40 -0800 window.location become broken in page cache 2011-02-22 16:20:46 -0800 1 1 1 Unclassified WebKit DOM 528+ (Nightly build) Mac (Intel) OS X 10.6 RESOLVED DUPLICATE 34679 P2 Normal --- 0 gojpeg webkit-unassigned oldest_to_newest 355281 0 gojpeg 2011-02-22 08:13:40 -0800 The object of window.location become broken if one leaves the page and then presses the back button. The following simple example may be a good illustration: var loc = window.location setTimeout(function () { alert(loc == window.location ? 'PASS' : 'FAIL') }, 1000) window.location.href = 'a-history-back-page.html' Here we cache the location object in a variable, set a timer to check the variable after back button is pressed, navigate to the page which sends us back, and get the “FAIL” alert. The a-history-back-page.html has the only JavaScript line: window.history.back() 355681 1 ap 2011-02-22 16:20:46 -0800 *** This bug has been marked as a duplicate of bug 34679 ***