TYPO3 Core

When I produce a preview link in the workspace module, the page behind the links produces an JS error due to missing document.domain.

...
// @todo redirect to split module if this is opened standalone

        // having this is very important, otherwise the parent.resize call will fail
    document.domain = '';
...

Here is also a developer comment that points to something that is missing?

This is somewhat related to this patch, but not implemented?
http://forge.typo3.org/attachments/5673/v1.patch

The biggest problem is, that after I called the preview link, I cannot leave the preview modus without deleting my cookies. I simply see only content from workspace even if i click on other pages or log in and switch to live workspace. This is the case if logged in and if not logged in! I had my colleague nearly crying because she thought she crashed the home page.

This was tested with 4.7.7 and 4.7.8