C# Microsoft Bot Schema Teams Image cropping off the top and bottom - botframework

Question

I had a question regarding Teams Microsoft Bot framework. Whenever my bot sends an adaptive card, the top and the bottom of the photo continue to cut off. Inside the adaptive card is the hero card image, it seems I'm unable to resize it to make it fit. I've tried making the image smaller and larger to see if that would fix the issue. Below is a screenshot of the issue I am having.
I'm hoping someone has run into the same issue and if this is fixable or not. Thank you.
Image being used; https://imgur.com/a/hkcSkrJ
public async Task<SendResult> SendAsync(NotificationTeamsAttempt attempt)
{
try
{
if (string.IsNullOrWhiteSpace(attempt.ConversationId))
throw new Exception("Conversation Id is required.");
if (string.IsNullOrWhiteSpace(attempt.ServiceUrl))
throw new Exception("Service Url is required.");
using (var connector = new ConnectorClient(new Uri(attempt.ServiceUrl), _clientId, _clientSecret))
{
var activity = MessageFactory.Text("");
activity.Attachments.Add(attempt.Attachment());
activity.Summary = attempt.Summary();
var response = await connector.Conversations.SendToConversationAsync(attempt.ConversationId, activity);
return new SendResult
{
IsSuccess = true,
DispatchId = response.Id
};
}
}
catch (Exception exception)
{
return new SendResult
{
IsSuccess = false,
Exception = exception
};
}
}
public override Attachment Attachment()
{
var card = new ThumbnailCard
{
Title = "Post submitted for review by " + DraftAuthor,
Subtitle = DraftTitle,
Text = DraftDescription,
Images = new List<CardImage>(),
Buttons = new List<CardAction>()
};
if (!string.IsNullOrWhiteSpace(TeamsUrl))
{
card.Buttons.Add(new CardAction
{
Type = "openUrl",
Title = "Review in Teams",
Value = TeamsUrl.Replace("null", $"%22post%7C{DraftId}%7C{DraftId}%22")
});
}
if (!string.IsNullOrWhiteSpace(SPUrl))
{
card.Buttons.Add(new CardAction
{
Type = "openUrl",
Title = "Review in SharePoint",
Value = $"{SPUrl}?postId={DraftId}&sourceId={DraftId}"
});
}
return card.ToAttachment();
}
Please disregard the black lines I've added. But below you can see where the image is cropping off.
Image of the cropping.

Answer 1

Moving comment to answer -
We are using the below JSON and we get the perfect image without cropping -- { "type": "AdaptiveCard", "body": [ { "type": "TextBlock", "size": "Medium", "weight": "Bolder", "text": "card image test" }, { "type": "Container", "items": [ { "title": "Public test 1", "type": "Image", "url": "https://i.imgur.com/OiJNN03.jpeg" } ] } ], "$schema": "adaptivecards.io/schemas/adaptive-card.json", "version": "1.0" }