This refers to the "share preview" option. However, it doesn't resolve the issue. When I'm on a product page and click "share preview," it only links to the homepage. Therefore, we always have to instruct the client to click the preview link and then...

Is there a setting that allows you to always pass preview theme ids as a url parameter instead of being saved as a cookie? In some circumstances, it would be easier with clients if the parameter was always in the URL.