when post triggered by workflow in ms teams channel, it is hiding text messages from the post

Question

When i am posting message with the help of MS Teams workflow, post containing messages are getting hide and not visible complete message.
Help with the solution to see complete message from the post triggered.
How i can increase the box size of the post? or any other way?

Thanks in advance.

Below is the screenshot.

Answer 1

Dear @Pawan,

Welcome to Microsoft Q&A. 

Thank you for providing the details and the screenshot.

Based on your description and what is shown in the image, I understand that you are posting messages to a Teams channel using Workflows (Power Automate), and the content is being posted as an Adaptive Card. However, when the message text is longer, only a truncated preview is visible in the channel, and the full content is hidden. You would like to either expand the message box or ensure the full text is visible.

I’ve tested this behavior as well, and what you’re seeing is expected behavior in Microsoft Teams.
When long text is placed inside the body of an Adaptive Card (for example, within TextBlock elements and with "wrap": true enabled), Teams renders the full content correctly, as shown in my Poll Request example. The card container itself automatically expands to fit the content in the card body. There is no option to manually resize or increase the “box size” of a card or post in Teams.

The issue you initially observed happens when long text is placed in: The card title, or the message preview / summary area generated by the workflow post. These areas are intentionally truncated by Teams to keep the channel feed readable. This behavior cannot be overridden by JSON settings or workflow configuration.

To avoid text being hidden or cut off, Microsoft recommends the following pattern for Teams notifications:

1/ Use the Adaptive Card as a summary + link

This is the recommended design pattern. Keep the card content short (for example, a title and brief description), and use an Action.OpenUrl button (like your “Here” button) to link to the full content hosted elsewhere, such as:

• a SharePoint page
• a OneDrive document
• a Power Apps page
• another Teams message or internal web page

This matches how notifications are typically designed in Teams.

2/ Post a plain text message instead of an Adaptive Card

If showing the full text directly in the channel is more important than having buttons or rich layout, you can configure your workflow to post a plain text message. Plain text messages are not truncated in the same way and will display the full content in the channel.

3/ Split long content into multiple messages

For scenarios where links are not suitable, another workaround is to post the content across multiple consecutive messages instead of a single card.

I hope this clarifies the behavior and helps you choose the best approach for your scenario. If you run into any issues while trying the steps, or if something still doesn’t feel quite right, please don’t hesitate to reach out again. I’ll do my best to support you however I can.  

Looking forward to hearing back from you with any updates or additional details. 

Warm regards, 

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