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<system-reminder> wrapping fires on every tool-call iteration in follow-up messages, derailing model behavior #29659
Description
Description
In prompt.ts (~line 1415), user message text parts in follow-up messages get wrapped in tags with "Please address this message and continue with your tasks" whenever step > 1 && lastFinished. This fires on every tool-call round.
Models interpret "Please address this message and continue with your tasks" as a system-level instruction to keep going, and start outputting "The system is asking me to continue" and wastes tokens. The in-place mutation of p.text also causes the wrapping to nest on subsequent iterations, compounding the issue.
Plugins
code-yeongyu/oh-my-openagent, different-ai/opencode-browser
OpenCode version
1.15.11
Steps to reproduce
- Start a session, send any message, let it complete (sets lastFinished)
- Send a follow-up message that requires multiple tool calls (e.g. "fix all lint errors" or "read these files then summarize")
- Every tool calls prepends
<system-reminder>... - The model starts repeating "the system is asking me to continue"
First message in a fresh session never triggers this since lastFinished is null so the wrapping block is skipped.
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Operating System
Ubuntu 26.04
Terminal
Konsole (bundled with Kubuntu)
(sorry for initial mispaste with ai-generated issue draft)
Activity
github-actions commentedon May 28, 2026
This issue might be a duplicate of existing issues. Please check:
step > 1 && lastFinishedinprompt.tstriggering the<system-reminder>wrap and causing spurious extra LLM round-trips. That issue focuses on clock skew as the trigger, while this issue focuses on normal multi-tool-call sessions, but the wrapping/nesting mechanism and the affected code path are the same.<system-reminder>leaking into user messages and being treated as user-authored input — related symptom where the tag content influences model behavior unintentionally.[-]<system-reminder> tags nest on every loop iteration, causing model to loop "the system is asking me to continue[/-][+]<system-reminder> wrapping fires on every tool-call iteration in follow-up messages, derailing model behavior[/+]