For DO_PAUSE_CONTINUE of RTL in misson

ArduCopter Copter 4.3
1

SITL in Copter4.3.5

Hi

I use MAV_CMD_DO_PAUSE_CONTINUE to perform pauses during mission (AUTO mode).
This command works well when between WPs.

If RTL is included in the mission, an error will occur if MAV_CMD_DO_PAUSE_CONTINUE is executed while the aircraft is executing RTL.
The error is COMMAND_ACK[result]=MAV_RESULT_FAILED.
Is this behavior intended?

Thank you.