Incorrect form-action for login-form on contribution page results on submit in error "This contribution has already been submitted. Click here if you want to make another contribution."

The POST action of the login form differs on contribution pages.

Contribution page: <form id="user-login-form" accept-charset="UTF-8" method="post" action="/civicrm/contribute/transact?destination=civicrm/contribute/transact">
Any other page: <form id="user-login-form" accept-charset="UTF-8" method="post" action="/node?destination=node">

Logging in by using this form on a contribution page results in the following error:
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Sorry. A non-recoverable error has occurred.
This contribution has already been submitted. Click here if you want to make another contribution.

Return to home page.
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Logging in using the same loginform on a page which is not a contribution page works as expected.