Copilot chat frozen after "maximum tool attempts reached" error

*Summary
Copilot Agent stuck and “Send” button becomes disabled after replying “continue” to the “maximum tool attempts reached” error, persisting even after project clean up.

*Steps to reproduce

  1. Open Katalon Studio v11.3.0 - Copilot.
  2. Open a project and interact with the Copilot Agent.
  3. Keep asking the Agent to perform tasks until it returns this specific feedback message: Oops, maximum tool attempts reached. You can type "continue" to proceed or rephrase your request.
  4. Type continue in the chat input and send it.
  5. Notice that nothing happens and the chat seems to be stuck. The “Send” button becomes inactive/disabled.
  6. Perform Close & Clean up - Project.
  7. Reopen the project and open the Copilot Agent again.
  8. Notice the chat is still stuck and the “Send” button remains inactive.

*Expected Results
After typing “continue”, the Copilot Agent should resume its process or allow the user to input a new prompt. Performing Close & Clean up - Project and reopening the project should reset the Copilot state so it can be used normally again.

*Actual Results
The Copilot Agent does not respond after typing “continue”. The chat gets completely stuck, and the send button is disabled. This stuck state persists even after doing Close & Clean up - Project and reopening the project, rendering the Copilot feature unusable.

*Screenshots / Videos

*Blocker?
Yes (Blocks the usage of the Copilot feature entirely for the project).

Number of affected users?
Potentially all users who hit the maximum tool attempts limit in Copilot.

*Operating System
MacOS Tahoe 26.5.2

*Katalon Studio version
v11.3.0 - Copilot

another issue, the markdown is not perfectly rendered on the copilot chatbox