C# SDK. If I subscribe to changes via a View, updates to rows trigger OnInsert + OnDelete instead of OnUpdate

I have a public table and a view like that:

[View(Accessor = "MyHeroes", Public = true)]
public static IQuery<Hero> MyHeroes(ViewContext ctx)
{
    return ctx.From.Hero().Where(h => h.Owner.Eq(ctx.Sender));
}

If I subscribe to the public table and update the row, I receive OnUpdate callback.
If I subscribe to the view and update the row, I receive OnInsert + OnDelete callbacks.

Here is how it looks in the logs:

1. [14:13:59] Create an entry.
2. [14:14:07] Update it.

Any ideas why subscribing to a View behaves differently from subscribing to a public table?

Start with the C# SDK subscription handling for the shown MyHeroes view and compare it with the public-table subscription path. Reproduce the create-then-update sequence from the issue and inspect the callback logs. Done means updating a row through a subscribed view produces OnUpdate rather than OnInsert plus OnDelete.