wait for altitude offset to be applied before updating idleTask data

src/main/flight/gps_rescue.c

@@ -303,6 +303,11 @@ void idleTasks()
         return;
     }
 
+    // Don't update any rescue flight statistics if we haven't applied a proper altitude offset yet
+    if (!isAltitudeOffset()) {
+        return;
+    }
+
     gpsRescueAngle[AI_PITCH] = 0;
     gpsRescueAngle[AI_ROLL] = 0;
 

src/main/flight/position.c

@@ -44,12 +44,13 @@ static int32_t estimatedAltitude = 0;                // in cm
 
 
 #if defined(USE_BARO) || defined(USE_GPS)
+static bool altitudeOffsetSet = false;
+
 void calculateEstimatedAltitude(timeUs_t currentTimeUs)
 {
     static timeUs_t previousTimeUs = 0;
     static int32_t baroAltOffset = 0;
     static int32_t gpsAltOffset = 0;
-    static bool altitudeOffsetSet = false;
 
     const uint32_t dTime = currentTimeUs - previousTimeUs;
     if (dTime < BARO_UPDATE_FREQUENCY_40HZ) {
@@ -111,6 +112,10 @@ if (sensors(SENSOR_GPS) && STATE(GPS_FIX)) {
 }
 #endif
 
+bool isAltitudeOffset(void)
+{
+    return altitudeOffsetSet;
+}
 
 int32_t getEstimatedAltitude(void)
 {

src/main/flight/position.h

@@ -22,6 +22,7 @@
 
 #include "common/time.h"
 
+bool isAltitudeOffset(void);
 void calculateEstimatedAltitude(timeUs_t currentTimeUs);
 int32_t getEstimatedAltitude(void);
 int16_t getEstimatedVario(void);