Stop button does not work and AI output/history not visible during generation

[touch2be]

Description

Two related issues occur during AI response generation:

1. The Stop button does not work — clicking the stop/cancel button (■) has no effect; the AI continues generating regardless
2. The chat history and AI output are not visible during generation — the chat area remains completely black/empty while the response is being streamed

Observed Behavior

• A message is sent and the AI starts processing (timer shows e.g. "1m 13s", progress shows 3%)
• The chat area is completely blank — neither the user's message nor any AI output is visible
• The stop button (■) in the bottom right is shown but clicking it does not cancel the generation
• The input field shows "Queue a message..." suggesting the system is locked in a generating state
• The only visible element is the user's last message bubble in the top right corner

Expected Behavior

• The chat history should remain fully visible during generation
• Streamed AI output should appear in real-time as it is generated
• The stop button should immediately cancel the ongoing generation
• After stopping, the partially generated response should remain visible (or be clearly marked as interrupted)

Why This Matters

• Users have no way to interrupt long or incorrect responses
• The blank screen during generation is disorienting — there is no feedback that anything is happening except the timer and progress percentage
• Makes the app feel unresponsive and broken during longer tasks

Environment

• OpenGUI Desktop Interface
• OS: Linux
• Model: GPT-5.4, Build mode

[akemmanuel]

Which version are you using?