Fix incorrect Resume Mission display

src/FlightDisplay/GuidedActionsController.qml

@@ -101,13 +101,15 @@ Item {
     property bool showLand:             _activeVehicle && _activeVehicle.guidedModeSupported && _vehicleArmed && !_activeVehicle.fixedWing && !_vehicleInLandMode
     property bool showStartMission:     _activeVehicle && _missionAvailable && !_missionActive && !_vehicleFlying
     property bool showContinueMission:  _activeVehicle && _missionAvailable && !_missionActive && _vehicleFlying && (_currentMissionIndex < missionController.visualItems.count - 1)
-    property bool showResumeMission:    _activeVehicle && !_vehicleArmed && _vehicleWasFlying && _missionAvailable && _resumeMissionIndex > 0 && (_resumeMissionIndex < missionController.visualItems.count - 2)
     property bool showPause:            _activeVehicle && _vehicleArmed && _activeVehicle.pauseVehicleSupported && _vehicleFlying && !_vehiclePaused
     property bool showChangeAlt:        (_activeVehicle && _vehicleFlying) && _activeVehicle.guidedModeSupported && _vehicleArmed && !_missionActive
     property bool showOrbit:            !_hideOrbit && _activeVehicle && _vehicleFlying && _activeVehicle.orbitModeSupported && _vehicleArmed && !_missionActive
     property bool showLandAbort:        _activeVehicle && _vehicleFlying && _activeVehicle.fixedWing && _vehicleLanding
     property bool showGotoLocation:     _activeVehicle && _vehicleFlying
 
+    // Note: The 'missionController.visualItems.count - 3' is a hack to not trigger resume mission when a mission ends with an RTL item
+    property bool showResumeMission:    _activeVehicle && !_vehicleArmed && _vehicleWasFlying && _missionAvailable && _resumeMissionIndex > 0 && (_resumeMissionIndex < missionController.visualItems.count - 3)
+
     property bool guidedUIVisible:      guidedActionConfirm.visible || guidedActionList.visible
 
     property var    _activeVehicle:         QGroundControl.multiVehicleManager.activeVehicle

src/MissionManager/MissionManager.cc

@@ -242,7 +242,7 @@ void MissionManager::_handleMissionCurrent(const mavlink_message_t& message)
         emit currentIndexChanged(_currentMissionIndex);
     }
 
-    if (_currentMissionIndex != _lastCurrentIndex) {
+    if (_currentMissionIndex != _lastCurrentIndex && _cachedLastCurrentIndex != _currentMissionIndex) {
         // We have to be careful of an RTL sequence causing a change of index to the DO_LAND_START sequence. This also triggers
         // a flight mode change away from mission flight mode. So we only update _lastCurrentIndex when the flight mode is mission.
         // But we can run into problems where we may get the MISSION_CURRENT message for the RTL/DO_LAND_START sequenc change prior