According to our testing, whether you use TextBlock or Action.OpenUrl to add a hyperlink in an adaptive card and send it to Teams, you can only access the link by clicking it.
If you copy the link, Teams assumes that you are copying a link to the post. This is by design.
To get this feature more quickly, you can send a feedback directly to Microsoft Feedback to add it in future updates.
Many features of our current products are designed and upgraded based on customers’ feedback. With requirements like this increase, the problem may well be released in the future.
Thanks for your understanding and support.
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