Python: Fix ag-ui state handling issues#2289
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moonbox3 merged 3 commits intomicrosoft:mainfrom Nov 18, 2025
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Pull Request Overview
This PR fixes state handling issues in the Python ag-ui package that were causing UI flickering - text would briefly appear and then disappear due to incorrect timing of MessageSnapshotEvent emissions and improper state context injection during agent execution.
Key Changes:
- Fixed timing of MessagesSnapshotEvent emission to prevent incomplete snapshots that cause UI flicker
- Improved state context injection logic to only inject on new user turns, not during mid-execution tool calls
- Added comprehensive logging throughout the stream processing pipeline for better debugging
Reviewed Changes
Copilot reviewed 4 out of 5 changed files in this pull request and generated 3 comments.
| File | Description |
|---|---|
python/packages/ag-ui/agent_framework_ag_ui_examples/agents/recipe_agent.py |
Added require_confirmation=False parameter to recipe agent configuration |
python/packages/ag-ui/agent_framework_ag_ui/_orchestrators.py |
Fixed state context injection logic and MessagesSnapshotEvent timing; added extensive logging |
python/packages/ag-ui/agent_framework_ag_ui/_message_adapters.py |
Added new agui_messages_to_snapshot_format function to normalize message format for snapshots |
python/packages/ag-ui/agent_framework_ag_ui/_events.py |
Added text accumulation tracking and logic to skip intermediate snapshots for predictive tools; enhanced logging |
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dmytrostruk
approved these changes
Nov 18, 2025
TaoChenOSU
approved these changes
Nov 18, 2025
markwallace-microsoft
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arisng
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Feb 2, 2026
* Fix ag-ui state handling * Bump package version and update changelog * Update changelog
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Motivation and Context
In the current code we're not sending the MessageSnapshotEvent at the proper time which was causing the UI to to handle weird state values, quickly showing some text and then having it disappear. These fixes were tested with the dojo app along with the getting started MAF Python scripts.
Description
Fix state problems.
Bump package to 1.0.0b251117 for a release.
Contribution Checklist