Card description is replaced by template card description after changing it

Describe the bug The card description (main text) is replaced by the template card description shortly after setting a custom description.

To Reproduce I don’t know a way to exactly reproduce the error, but it has been reported more than once by our users. It affects a certain kind of card for us, but so far I do not know what makes it special.

The basic process is as follows:

1. Copy card from a template (which also has a description)
2. Set name, description and position
3. Upload an attachment
4. Set custom fields

Expected behavior The description set in step 2 stays.

Desktop (please complete the following information):

• OS: Windows Server
• .NET Framework 4.6.2
• Manatee.Trello 3.10, Manatee.Json 10.1.3

Additional context

• No changes to the config except TrelloConfiguration.ThrowOnTrelloError = true;

• The code creating the copy follows. The code snippet refers to message which contains this deserialized bit of data:

  {
    "BoardId": "4f2ef2f82e7ecf843fb79644",
    "ListId": "52ce972a1c855c5a309edd85",
    "TemplateCardId": "58eb98323a7c5202d3f48a28",
    "Title": "the title that stays",
    "Description": "this is the description that should stay",
    "Attachments": {
      "$type": "Ops.Contracts.Model.Trello.Attachment[], Ops.Contracts",
      "$values": [
        {
          "Name": "some file.yaml",
          "BinaryData": "some data"
        }
      ]
    },
    "Fields": {
      "$type": "Ops.Contracts.Model.Trello.Mapping[], Ops.Contracts",
      "$values": [
        {
          "Data": "2019-09-19T11:24:24.5704536+02:00",
          "FieldName": "some date"
        }
      ]
    }
  }
  

      var board = _trello.Board(message.BoardId);
      await board.Lists.Refresh();
      var list = board.Lists[message.ListId];
      var cards = list.Cards;
  
      ICard card;
      if (message.TemplateCardId != null)
      {
        card = await cards.Add(_trello.Card(message.TemplateCardId),
                               CardCopyKeepFromSourceOptions.All);
      }
      else
      {
        card = await cards.Add(message.Title);
      }
  
      card.Name = message.Title;
      card.Description = message.Description;
      card.Position = Position.Top;
  
      var tasks = message.Attachments?
                         .ToList()
                         .Select(x => card.Attachments.Add(x.BinaryData, x.Name));
      if (tasks != null)
      {
        await Task.WhenAll(tasks);
      }
  
      await MapFields(message, board, card);
  

  MapFields is responsible to set custom field values and to transform data types. No errors are logged.

To debug this issue further, is there a way to force a flush of in-memory card data to the Trello API or to force a re-read from the Trello API?

[agross]

@gregsdennis The workaround you provided appears to have fixed our problems with the card descriptions. I’m in favor of keeping this issue open and hopefully find a solution that does not require to change Manatee.Trello’s internal optimizations.

[gregsdennis]

@agross any luck?