Gemini output is missing parts of text response #7203
Description
Describe the bug
Agent output is missing some text: The last couple of words of output appear to be missing.
To Reproduce
Steps to reproduce the behavior:
Open goose in the goose repo and prompt "Is there a readme here". Output is truncated, one example:
Yes, there is a `README.md` file in the current directory. There are also several other specialized documentation files, such as:
* **AGENTS.md**: Specific instructions for the goose agent framework.
* **CONTRIBUTING.md**: Guidelines for contributing to the project.
* **installation.md**: Detailed installation instructions.
* **GOVERNANCE.md**, **MAINTAINERS.md**, and **SECURITY.md**: Project
⏱️ Elapsed time: 7.35s
Context: ○○○○○○○○○○ 0% (3586/1048576 tokens)
Expected behavior
Text continues after the word "Project"
Please provide the following information
- OS & Arch: macOS 26.2 arm64
- Interface: CLI
- Version: 1.24.0
- Extensions enabled: Developer, Extension Manager
- Provider & Model: GCP Vertex AI, gemini-3-flash-preview
Additional context
It appears that the last part of the agent response is in a thinking block, which got dropped when providing the response.