No longer possible to switch the project navigation.

Since Cloud's last release, it's no longer possible to switch the project navigation back to the old default as per: Configuring Project Navigation

Partial Workaround

If your interested in the statistics in the 'overview' page, you can use the 'issue statistics gadget' to view them. This won't require a filter and will look very similar to the old view and won't require a filter to be created.

To do that:

1. Create a dashboard to show the statistics
2. Add the Issue Statistics gadget to it (one for each project and statistics)
3. Select the project from which you want to see these statistics
4. Select in 'Statistic Type' the field you want to see (for example, statistics that were shown in the 'overview' page include: 'priority', 'assignee', 'status' and 'component')