Why Do Chrome\'s Session Cookies Persist After Browser Closure on Mac OS X Lion?

Chrome Browser's Perplexing Session Cookie Preservation

In an attempt to store session cookies using JavaScript, users have encountered an unexpected discrepancy in Chrome's cookie handling. Despite setting an expiration time for these cookies, they persist even after closing the browser and restarting it.

Investigating Chrome's Cookie Behavior

Further investigation revealed that this peculiar behavior is limited to Chrome on Mac OS X Lion, while other browsers and operating systems delete session cookies as expected. This anomaly prompted users to delve deeper into Chrome's session management settings.

The Revelation: "Continue Where You Left Off"

It was discovered that the "Continue where you left off" option, when enabled in Chrome, leads to the retention of session cookies. This option keeps tabs and sessions active even after closing the browser, overriding the session cookie expiration rules.

Chrome's Inconsistent Cookie Behavior

The question then arises: why does Chrome behave differently on Mac OS X Lion compared to other operating systems? The answer to this remains elusive, but users are speculating that it may be related to Lion's implementation of the session resumption feature.

Additional Resources for Further Insight

For those seeking more information on this topic, the following resources are recommended:

• Bug report: [Chrome is not deleting temporary cookies](https://bugs.chromium.org/p/chromium/issues/detail?id=54957)
• Issue 128513 in Chromium: [Session Cookies not cleared when Chrome processes closed](https://bugs.chromium.org/p/chromium/issues/detail?id=128513)
• Issue 128567: [Session only cookies don't delete](https://bugs.chromium.org/p/chromium/issues/detail?id=128567)

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