sessionStorage on new window isn't empty, when following a link with target=“_blank”

Question

I see different behaviors of the HTML5 sessionStorage when following Weblinks. Sometimes the sessionStorage of the first page is being copied to the TargetPage, sometimes I

Answer 1

IMHO:

I think the problem is in different browsing context. In W3C webStorage specification there is a paragraph:

When a new Document is created in a browsing context which has a top-level browsing context, the user agent must check to see if that top-level browsing context has a session storage area for that document's origin

Document in this quote means new page. So it means if you open in new tab the same page it use the same browsing context and the same sessionStorage, but if you open in new window (ie target="_blank") the browsing context is different.

OR

The problem can be of separate CPU threads, so separate browsing context and separate sessionStorages.