Here's my code:
var table = await ServiceFeatureTable.OpenAsync(new Uri(AGOL_URL_Class.GetURL() + LayerID), null, null);
table.Where = Where;
table.OutFields = Fields;
var selected = await table.QueryAsync(Current_OBJECTID);
Its just like all the samples and it gets stuck almost all the time at QueryAsync
It just turns null after 60 sections then the code continues.