Have you checked the latest release for fixes?

• Yes, I’ve tested on the latest release

Description

Expected Behavior
Describe what you thought should happen here.
When using a Pixhawk with Rover Firmware, it should be possible to add waypoints upon entering the Plan Flight mode.
Current Behavior
Describe what actually happened here.
When using a Pixhawk with Rover Firmware, the waypoint addition function is disabled upon entering the Plan Flight mode.

Steps To Reproduce

1. Install Rover firmware on Pixhawk.
2. Connect QGC to Pixhawk.
3. Navigate to Vehicle Configuration -> AirFrame -> Rover -> Generic Rover Ackermann -> Apply and Restart.
4. Enter the Plan Flight menu in QGC.
5. The Waypoint button is disabled.

Additional Details
Add any extra info (errors, warnings, etc.) here.

System Information

QGC Version: v5.0.6 64bit
QGC build: stable
Operating System: Windows 10
Flight Controller: Pixhawk 5X
Autopilot Software (with version): PX4 1.15.4

Log Files and Screenshots