Missing notification for backlink

[papafe]

It seems notifications for backlinks are not being raised. I have got the following .NET test:

  [Test]
  public void ABackLinkTest()
  {
      var testObject = new TestNotificationObject();
      _realm.Write(() => _realm.Add(testObject));
      var notificationCount = 0;

      testObject.PropertyChanged += (sender, e) =>
      {
          notificationCount++;
      };
      Assert.That(testObject.Backlink.Count, Is.EqualTo(0));

      _realm.Write(() =>
      {
          var newTestOb = new TestNotificationObject();
          newTestOb.LinkSameType = testObject;
          _realm.Add(newTestOb);
      });
      _realm.Refresh();
      Assert.That(testObject.Backlink.Count, Is.EqualTo(1));
      Assert.That(notificationCount, Is.EqualTo(1));
  }

(https://github.com/realm/realm-dotnet/blob/6c5e5bdfd0fcc720aa7c8469612de1cb29619a68/Tests/Realm.Tests/Database/NotificationTests.cs#L209-L231)

The test fails at the last assertion (the first empty notification is swallowed up). I’ve tried both by passing a null keypath array or just the backlink property, but the result is the same. I can see that the notifications is raised in core, but it’s practically empty (no columns, no add/delete/.. indexes).
I've managed to reproduce this also in js and dart.

[sync-by-unito]

➤ PM Bot commented:

Jira ticket: RCORE-2114

[jedelbo]

@papafe if you can provide the reproduction case in js, I can try to look into it.

[jedelbo]

This could very well be fixed by #7987