When I am at the root of my space, there is no page tree in the side bar, even though it is configured to be there.
If however, I click on one of the pages under the "Recently edited", the page tree appears in the side bar as it should.
But again, if I go back to the root of the space it dissapears.
I have tried to delete the index and journal and re-build the indexes.
The issue is the same both for my account and the admin user I created when installing Confluence.
Using Confluence 6.7.0x64 on Linux Ubuntu 16.04