onTimerReset not called in a Datafield?

I made a data field in which I want to send some BLE notifications to a peripheral device when the user discards the activity.

I pressed the start/stop button in activity and pressed discard, but onTimerReset wasn't called. So curious why. 

The same code works on fr745/fr955 but fenix7.

The outcome looks like the onTimerStop invoked incorrectly instead of onTimerReset on fenix7.

MODEL: FENIX7

FW:14.68

import Toybox.Activity;
import Toybox.Lang;
import Toybox.Time;
import Toybox.WatchUi;
import Toybox.Application.Storage;
using LogMonkey as Log;

class MyView extends WatchUi.DataField {

  //! Set the label of the data field here
  //! @param deviceManager The device manager
  public function initialize(deviceManager as DeviceManager) {
    DataField.initialize();
    _deviceManager = deviceManager;
    _tick = 0;
  }

  public function compute(
    info as Info
  ) as Numeric or Duration or String or Null {
    //other logic
    // See Activity.Info in the documentation for available information.
    WatchUi.requestUpdate();
  }

  // Update the field layout and display the field data
  function onUpdate(dc) {
    //update view
  }

  public function onTimerStart() as Void {

    Log.Debug.logMessage("View", "sending start/resume");

	 //notify

  }

  public function onTimerResume() as Void {
    Log.Debug.logMessage("View", "sending resume/start");

	 //notify

  }

  public function onTimerPause() as Void {
    Log.Debug.logMessage("View", "sending pause");

	 //notify

  }
  public function onTimerStop() as Void {
		Log.Debug.logMessage("View", "sending pause");

	 //notify
  }
  public function onTimerReset() as Void {

    Log.Debug.logMessage("View", "onTimerReset sending save");

	 //notify
  }
}