René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Custom agent selection reverts to Default agent mid-session","articleBody":"**Description**\nWhen starting a session with a specific custom agent explicitly selected for the initial prompt, the agent selection reverts to the Default agent as the session progresses (during subsequent reasoning/turns).\n\n**Steps to reproduce**\n1. Start a new session/kickoff prompt with a specific custom agent selected.\n2. Observe the initial prompt runs under the selected agent.\n3. As the conversation continues and further thinking/turns happen, the session shows/reverts to the 'Default agent'.\n\n**Expected behavior**\nThe explicitly selected custom agent should remain active for the duration of the session (or at least persist across turns) unless the user explicitly changes it.\n\n**Actual behavior**\nAgent selection reverts to Default agent after the initial prompt.\n\n**Additional context**\nReported via Copilot CLI session. Unclear whether this is a UI display issue (mislabeling) or an actual functional reversion of agent config underneath.","author":{"url":"https://github.com/AliSmith95","@type":"Person","name":"AliSmith95"},"datePublished":"2026-07-07T10:33:56.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/4047/copilot-cli/issues/4047"}