Object 'user_shop_guest' is not cleaned if user skip from logged to non registered mode

Object 'user_shop_guest' is not cleaned if user skip from non registered mode to logged mode

When user starts with 'purchase without registration' fills the form then decide to login, the object 'user_shop_guest' is not cleaned.
Logging out cleans the object.

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Aw: Object 'user_shop_guest' is not cleaned if user skip from logged to non registered mode

Screenshot error?

Aw: Object 'user_shop_guest' is not cleaned if user skip from logged to non registered mode

This is not visible for the user.