Patching of readonly collections fails

[MovGP0]

Given I have an Entity with an readonly collection like this:

public sealed class MyEntity 
{
    public MyEntity()
    {
    }

    [JsonConstructor]
    public MyEntity(IEnumerable<string> tags)
    {
        Tags = tags?.ToList() ?? new List<string>();
    }

    [JsonProperty("tags")]
    public ICollection<string> Tags { get; } = new List<string>();
}

Than it is not possible to patch it, besides the property beeing potentially writeable and also serializeable.

[aspnet-hello]

This issue was moved to dotnet/aspnetcore#2427