Wikimedia Bugzilla is closed!

After installing the MultimediaViewer extension, setting $wgIncludejQueryMigrate = true (bug 66098), and applying the fix for bug 67565, I get the following error in IE 8:

Object doesn't support this property or method
oojs.js, line 89 character 2

targetFn.prototype = Object.create( originFn.prototype, {
	// Restore constructor property of targetFn
	constructor: {
		value: targetConstructor,
		enumerable: false,
		writable: true,
		configurable: true
	}
} );