Full-Screen Chat Mode in GitHub Copilot App

[raynaldgirard]

Feature Request: Full-Screen Chat Mode in GitHub Copilot App

The GitHub Copilot app currently displays the chat panel in a fixed, constrained layout. There is no option to expand the chat to full screen, which makes it difficult to work with long conversations, multi-step agent sessions, or tool results that return substantial content (JSON payloads, code blocks, dashboards, etc.).

This becomes especially critical when using MCP servers that leverage the MCP Apps UI extension (io.modelcontextprotocol/ui). These servers can return rich visual content — from simple charts to complete interactive dashboards with multiple metrics, graphs, and data visualizations rendered inline via Plotly or HTML. Displaying a full dashboard properly requires as much screen real estate as possible. Cramming that kind of content into a narrow, fixed chat panel makes the output nearly unusable: elements are truncated, charts are too small to read, and the overall experience defeats the purpose of building rich MCP-powered interfaces in the first place.

When working with agentic workflows that involve multiple tool calls and rich visual responses, the limited chat viewport forces excessive scrolling and makes it hard to maintain context across a session.

Request: Please add a full-screen (or at least an expanded/maximized) mode for the chat panel in the GitHub Copilot app, similar to what is available in other AI chat clients. For teams building data dashboards and visualization tools on top of MCP, having access to the full presentation space is not a luxury — it is essential to the workflow.

A simple toggle button to expand the chat to fill the application window would be sufficient as a first step.