Agent Merge: Monitoring is unable to continuously see/act on existing reviews/comments and CI issue

Version: 1.139.0-insider (user setup)
Commit: 046944034292b5479b4e9a50ad1a508033ffb64f
Date: 2026-09-17T03:41:14Z
Electron: 43.6.0
ElectronBuildId: 15274685
Chromium: 150.0.7871.250
Node.js: 24.20.0
V8: 15.0.245.31-electron.0
@github/copilot: 1.0.84-5
@github/copilot-sdk: 1.0.13
OS: Windows_NT x64 10.0.26200

- Feature (e.g. agent/edit/ask mode): Agent Merge
- Selected model (e.g. GPT 4.1, Claude 3.7 Sonnet): GPT-5.6 Terra
- Logs:
`Task completed: Enabled persistent Agent Merge monitoring for #1913. Monitoring will begin after this turn and remain active to recurrently inspect validation, Copilot reviews and suppressed comments, review threads, and merge conflicts, applying authorized fixes until actionable issues are resolved.
`

Steps to Reproduce:

1. Activate Agent Merge with check for reviews and CI failures
2. Mostly issues are only resolved once.
3. After that new reviews/comments/issues are not resolved, even that the agent states that "Monitoring will begin after this turn and remain active to recurrently inspect validation"
4. Only instructing the agent to not rely on Agent Merge and check on its own starts pulling fresh details from the PR