Enity SiteLink URL is always null

[FaFre]

For some reason the URL for SIteLink's is always null.

var entity = new Entity(_wikiDataSite, "Q1022");
                await entity.RefreshAsync(
                    EntityQueryOptions.FetchAllProperties
                );

I also tried around with EntityQueryOptions e.g. setting only FetchSiteLinkURL and so on, but I couldn't get it working. Is this a library Problem, or has it something to do with the Wiki-Site I'm querying? (Wikidata)

[CXuesong]

That's interesting since there is unit test covering this part

WikiClientLibrary/UnitTestProject1/Tests/WikibaseTests.cs

Lines 149 to 154 in 19a3658

	ShallowTrace(entity);
	Assert.Equal("test entity " + rand, entity.Labels["en"]);
	Assert.Contains("test", entity.Aliases["en"]);
	Assert.Contains("This is a test entity", entity.Descriptions["en"]);
	Assert.Contains("此实体仅用于测试之用。", entity.Descriptions["zh"]);
	Assert.Equal("Foo", entity.SiteLinks["testwiki"].Title);

Can you perhaps check the actual response from MW? E.g.

https://www.wikidata.org/wiki/Special:ApiSandbox#action=wbgetentities&format=json&ids=Q1234&props=sitelinks