Background review fork loses gateway prompt context
Cluster 76938. Data as of
Nothing open on GitHub. Fix merged in #76990 on 2 Aug 2026. Check it covers your case.
The short answer
- Known?
- Yes. 3 related items grouped here, 1 issue already closed.
- Fix event
- A fix was merged to main in PR #76990. Check it covers your case. No release data is tracked.
- Tracker
- The maintainers' tracker marks this
resolved, deciding PR #76990. That is separate from the fix event. - Still open
- Nothing open on GitHub.
These items address a bug where background review forks do not carry over the gateway's per-request system prompt, ephemeral prompts, prefills, and provider pins, causing prompt-cache misses and incorrect behavior. The fixes aim to preserve that context when forking for background review.
Open issues0
Open PRs0
Fixes on record
-
#76990 fix(background-review): carry gateway ephemeral prompt, prefills, and provider pins into review forks
files:
agent/background_review.py,tests/run_agent/test_background_review_cache_parity.py
1 PR closed without merging
From the close comments: merged via another change 1
-
#76948 fix(background-review): preserve gateway prompt context · merged via another change →
#76990,#76938
Closed issues · 1
- Closed#76938[Bug]: Background review fork doesn't receive the WebUI gateway's per-request system-prompt injection → prompt-cache miss on every review
How this cluster was grouped
-
Link evidence (
structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference. -
Pairwise link density
0.67: the share of item pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36.1.00means every pair is linked.
Pick up a Lab task
Check whether a fix covers the open issues here, with your own agent. Bring back evidence for maintainers.
Open the LabAt a glance
- Merged PRs
- #76990
- Closed issues
- 1
- Attempts
- 1 PR closed without merging
- Fix link checked
- 2 Aug 2026