Nothing open on GitHub. Fix merged in #115290 on 18 Sep 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 #115290. Check it covers your case. No release data is tracked.
- Tracker
- The maintainers' tracker marks this
resolved, deciding PR #115290. That is separate from the fix event. - Still open
- Nothing open on GitHub.
These items concern a bug where text deltas appearing after tool use in Bedrock Converse streaming responses were misordered due to incorrect contentBlockIndex handling. The cluster covers the problem report and a related fix attempt.
Open issues0
Open PRs0
Fixes on record
-
#115290 Bedrock Converse sessions no longer brick on 'assistant message prefill' after a streamed text+tool turn (#108200, salvage #107472)
files:
agent/bedrock_adapter.py,contributors/emails/[redacted:email],tests/agent/test_bedrock_adapter.py
1 PR closed without merging
From the close comments: duplicate 1
-
#108209 fix(bedrock): key stream blocks off contentBlockIndex · duplicate →
#107472,#108200
Closed issues · 1
- Closed#108200Bedrock Converse: text deltas after toolUse get misordered, bricking sessions with 'does not support assistant message prefill'
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structural links throughout): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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
- #115290
- Closed issues
- 1
- Attempts
- 1 PR closed without merging
- Fix link checked
- 18 Sep 2026