[Rendering] CodeBlock doesn't work in new teams.

Target Platforms

Other

SDK Version

don't know

Application Name

Microsoft Teams (macOS)

Problem Description

I'm trying to push a message via Webhook. And that should be a "CodeBlock". My Input is

{
   "type" : "message",
   "attachments" : [
      {
         "content" : {
            "$schema" : "http://adaptivecards.io/schemas/adaptive-card.json",
            "body" : [
               {
                  "codeSnippet" : "Date: Mon, 10 Jul 2023 11:54:21 +0200\nMIME-Version: 1.0\nSubject: NEW PRIIP Product setup ISIN:DE000UL45BE5 (Deadline 2023-07-10 13:52)",
                  "type" : "CodeBlock"
               }
            ],
            "type" : "AdaptiveCard",
            "version" : "1.5"
         },
         "contentType" : "application/vnd.microsoft.card.adaptive",
         "contentUrl" : null
      }
   ]
}

which I send via a POST-Request.

In Teams classic the result looks OK:

In the new Teams it does not:

Maybe the CodeBlock is broken in new teams?

Screenshots

No response

Card JSON

{
            "$schema" : "http://adaptivecards.io/schemas/adaptive-card.json",
            "body" : [
               {
                  "codeSnippet" : "Date: Mon, 10 Jul 2023 11:54:21 +0200\nMIME-Version: 1.0\nSubject: NEW PRIIP Product setup ISIN:DE000UL45BE5 (Deadline 2023-07-10 13:52)",
                  "type" : "CodeBlock"
               }
            ],
            "type" : "AdaptiveCard",
            "version" : "1.5"
         }

Sample Code Language

No response

Sample Code

No response

Use the supplied Adaptive Card JSON and webhook request as the reproduction input; compare CodeBlock rendering in Teams classic and new Teams. Confirm whether the discrepancy is reproducible in the Adaptive Cards implementation or is specific to the Teams host, then document the resulting behavior or fix.