Tasks in "competetive mode" get accepted automatically

If you assign a user to a task, that is in competitive mode, he receives an e-mail, that he is assigned to the task with a link to the task.

If he clicks the link and logs in, the task will be accepted automatically.

This is wrong. The task should open in read-only mode and he should then have to accept the task, if he wants to take the responsibility for the task.

To reproduce:

• Switch an existing task to "competetive" in the task properties for the multi user mode
• Assign it to a user that has no pm rights. The job assignment has the job status "unconfirmed".
• log in as the user (without calling the task URL) and open the task
• you will see a pop-up asking you, if you want to accept the task. Do NOT click it
• Log out again.
• Log in with the same user, that is assigned to the task, but call the URL to the task directly before log-in
• The task opens directly and you will NOT see the pop-up asking you to accept the task.
• leave the task again
• Check the job status of the user. It has now the status "open" instead of unconfirmed, as it should have.