Environment
- Surface: Web / iOS / Android / macOS / Windows/ Linux
- Browser or app version:
- Affected feature and model, if relevant:
Bug
What happened, and what did you expect?
Reproduction
Steps or a minimal example prompt:
Diagnostics
Exact error or screenshot:
When it happened (with timezone) and how often:
Environment
- Surface: Android
- Device: Samsung Galaxy A50 (SM-A505F/DS)
- Android version: 11
- ChatGPT app version: 1.2026.244 (21)
- Network: Mobile data
- VPN: Unseen Online
- VPN exit location during this reproduction: Estonia
- Private DNS: Off
Bug description
I have reproduced a serious ChatGPT Android conversation-state bug with screenshots.
At approximately 4:58 PM on September 20, 2026 (UTC+03:30), the app displayed:
“Node bbb21f60-0383-4d63-b8e0-a607907f96ca not found in conversation tree”
At the same time, a message showed:
“Failed to send”
I did NOT retry the failed message.
Reproduction steps
-
At 4:58 PM, the conversation entered the failed state above.
-
At 5:00 PM, I checked the VPN.
- Provider: Unseen Online
- Exit location: Estonia
- The connection had already been active for more than two hours.
-
At 5:01 PM, I sent a unique test message:
TEST-MARYAM-SEP20-1658
ChatGPT received it and responded normally.
-
At 5:02 PM, I left the
