Broken Activity participant editable list in Activity Section

Hello Creatio Community,

I have made the Activity participant detail (Activites section) as an editable list.

When I add a new record and click on the added row ( the active row doesnt behave normally) as editable lists in other sections. I think is probably sort of bug of the system, because i have tried in fresh installations and the same thing happens.

I overcome this by refreshing the page so that the added row behaves normaly.

I manage to refresh the page by sending a message from a business process to the Front-End and subscribe to the message. But i refresh the whole Activity (entity), i want to refresh only the Participant detail.

This snippet is implemented in ActivityPageV2

			init: function() {
				this.callParent(arguments);
				// register our onProcessMessageReceived function to get messages from the server
				Terrasoft.ServerChannel.on(Terrasoft.EventName.ON_MESSAGE, this.onProcessMessageReceived, this);
			},
			onProcessMessageReceived: function(scope, message) {
				debugger;
				var sender = message && message.Header.Sender;
					if (sender === "RefreshDetailActivityParticipantFromBP") { //"SMRefreshPaged"
					this.reloadEntity();
				}
			}

How can i manage to refresh only the Participant detail list?

I have tried also this.reloadGridData() and this.updateDetail({reloadAll: true}); without success.