Bug Report: WebChat Stop Button Stuck in "Thinking" State

Severity

Low — UI display issue only; no impact on actual functionality or data

Environment

• App: OpenClaw WebChat
• Channel: webchat
• Runtime: agent=main | host=MacBook Air | os=Darwin 25.3.0 (arm64) | model=minimax/MiniMax-M2
• Browser: Safari
• App Version: OpenClaw 2026.5.12 (50a2481)

Issue Description

The stop button in the WebChat interface remains in a "thinking" state after the assistant has fully completed its response and the session is idle. The button displays three animated dots (pulsing thinking indicator) and does not respond to clicks — it appears permanently stuck.

This has been observed multiple times within the same session.

Steps to Reproduce

1. Open WebChat and send a message to the assistant
2. Wait for the assistant to complete its response
3. Observe that the stop button still shows the thinking animation (three pulsing dots) after the response is fully delivered
4. Click the stop button — it does not respond or stop anything

Expected Behavior

Once the assistant has completed its response, the stop button should return to an idle/inactive state and should not display the thinking animation.

Workaround

Refreshing the page (Cmd+R on Mac) temporarily resolves the visual issue. The conversation functions normally after refresh.

Additional Notes

• This appears to be a UI display bug only — the actual backend state is correct (the assistant has stopped processing), but the frontend button state does not refresh to reflect this
• No data loss or functionality impact has been observed
• A screenshot or screen recording of the issue would be helpful for debugging

Suggested screenshot/recording: Capture the stuck stop button animation alongside the completed response text in the chat area.