Why the thumbnailCard image has a extra margin-top: 0.8rem; style?

[CatherineLiyuankun]

Github issues should be used for bugs and feature requests. Use Stack Overflow for general "how-to" questions.

Versions

What package version of the SDK are you using. 4.22.2
What nodejs version are you using v18.19.0
What browser version are you using Google Chrome Version 123.0.6312.124 (Official Build) (arm64)
What os are you using macOS 14.4.1 (23E224)

Describe the bug

thumbnailCard image has a extra margin-top: 0.8rem; style

To Reproduce

Steps to reproduce the behavior:

1. Create a thumbnailCard

const {
  TeamsActivityHandler,
  CardFactory,
  TeamsInfo,
  MessageFactory,
} = require("botbuilder");

async function thumbnailCardResponse(action, teamsConfig) {
  const data = await action.data;
  const {
    coverImageUrl,
    subEntityId,
    contentTitle,
    contentSubtitle,
    contentUrl,
  } = data;
  const entityId = "entityId";
  const { id } = teamsConfig;
  const context = "xxxxxxx";

  const buttons = [
    {
      type: "openUrl",
      title: "Open in Teams",
      value: `https://teams.microsoft.com/l/entity/${id}/${entityId}?webUrl=${contentUrl || ""}&context=${context}`,
    },
    {
      type: "openUrl",
      title: "Open in Browser",
      value: contentUrl || "",
    },
  ];
  const images = [
    {
      url: coverImageUrl,
      alt: "Cover Image",
    },
  ];

  // create a Thumbnail Card
  const thumbnailCard = CardFactory.thumbnailCard(
    "",
    contentSubtitle || "",
    images,
    buttons,
  );

  thumbnailCard.content.subtitle = "";
  const attachment = {
    contentType: thumbnailCard.contentType,
    content: thumbnailCard.content,
    preview: thumbnailCard,
  };

  return {
    composeExtension: {
      type: "result",
      attachmentLayout: "list",
      attachments: [attachment],
    },
  };
}

2. View the thumbnailCard on Teams
3. The image of thumbnailCard has a extra margin-top: 0.8rem; style

Expected behavior

The title and image are aligned at the top.

Screenshots

If applicable, add screenshots to help explain your problem.

Additional context

Add any other context about the problem here.

[tracyboehrer]

BF SDK doesn't render the cards. This should be brought up with Teams.