The on screen menu just doesn't display. I can also be out on a taxiway and nothing appears.
This is a known P3D installation bug. If you updated using only the Client installer, no 3rd party application that use a menu will be able to show it, because LM haven't included the updated files required by the new Scaleform (transparent) menu in the Client installer.
In order to fix this, you must:
- Uninstall the P3D Client
- Download either the P3D Content file or the P3D Full installer.
- Install the Content, then reinstall the Client or, if you downloaded the Full installer, just the Full installer.