Context buffer not clearing with /clear or /new commands

[Expelz]

Description

The buffer persistently shows 38.4k tokens (24% of context window) and cannot be cleared using the /clear or /new commands.

Steps to Reproduce

1. Use GitHub Copilot CLI and accumulate buffer content

2. Attempt to clear buffer using /clear command

3. Alternatively, try /new command to start fresh session
4. Observe that buffer remains at 38.4k tokens (24%)

Expected Behavior

• /clear command should clear the buffer and reset token count
• /new command should start a new session with empty buffer

Actual Behavior

• Buffer remains at 38.4k tokens despite using /clear or /new commands
• Unable to free up context window space

Environment

• GitHub Copilot CLI Version: 0.0.406
• Operating System: macOS (Darwin)
• Date: 2026-02-10

Impact

This limits the available context window for new interactions, reducing from 100% to 76% available capacity.

Additional Context

The persistent buffer content appears to be stuck and is not affected by session management commands.