Message reaction on feedback triggers "Error" while Adaptive Card is pending.

Question

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Problem Description: I am using an Adaptive Card in Copilot Studio to collect user input. When the agent is in the "Awaiting Response" from the user for this card, the user attempts to add a reaction (e.g., Thumbs Up) to the message immediately preceding the card.

The Issue: Instead of ignoring the reaction or processing it as a background event, the Copilot Designer displays an Error Message after reacting.

Environment:

Platform: Microsoft Copilot Studio (Designer / Test Pane)

• Channel: Web Chat
• Type: "Ask with Adaptive Card"

Observations:

1. If the user completes the card submission first, the error does not occur.
2. The error only triggers when an Adaptive Cardactivity is pending a selection response from the user.
3. I found some Properties remarks in https://learn.microsoft.com/en-us/microsoft-copilot-studio/authoring-ask-with-adaptive-card, but not sure if there is any solution for it. If the agent is awaiting a submission from an Adaptive Card and the user sends a text message instead, this response is considered invalid, unless the message triggers an interruption.

Questions:

1. Is this a known limitation of the Copilot concurrency handling for message reactions?

Any workaround method to solve these issues?