Hi,
I noticed that even though the checkbox in the "Govern planet" windows is marked for Auto-upgrade improvements, nothing happens post v1.5. I did not have this problem during the opt-in period.
The improvements will display the upward pointing arrow indicating it can be upgraded/is queued for an upgrade, but in the planets build queue the upgrade is never added. It is however possible to manually upgrade improvements.
However, manually upgrading improvements quickly becomes a tedious task as your empire grows...
Has anyone else noticed this?