I haven't been able to reproduce this, but there are enough independent reports that this almost certainly a real issue, or a vast conspiracy:
- See PHI668.
Steps to reproduce:
- Create a new project.
- Create the workboard for the new project.
- Change the default workboard filter (it has to be a custom query rather than one of the built-in ones, I changed it to tasks assigned to myself).
- On the “backlog” column, click “View as Query”.
- Click “Search”.
- Go back to workboard page, get 404ed.