Amazon Q cannot read the active file in the context. It thinks it is truncated.

**Describe the bug**
activeFile context shows only ~200 lines, ends abruptly mid-method

No truncation indicator provided

User asked about line 677, but content not accessible via activeFile context

fsRead tool shows complete file content correctly

**To Reproduce**
Happens randomly, maybe after a long chat session.

**Expected behavior**
Have access to entire file content in activeFile context, or

**Actual behavior**
Silent truncation at ~200 lines

Incomplete method shown at end of content

No indication that more content exists

**Screenshots**

**Toolkit Logs**
Environment:

OS: Windows

IDE: Visual Studio (based on workspace context)

File type: C# (.cs)

File size: 1046 lines

**Development System (please complete the following information):**
- Windows Version: Version 23H2 (OS Build 22631.5624)
- Visual Studio Version: Microsoft Visual Studio Enterprise 2022 (64-bit) - Current
Version 17.14.12

- AWS Toolkit for Visual Studio Version:

[log_2025-10-06_09-34-17_13008.txt](https://github.com/user-attachments/files/22728011/log_2025-10-06_09-34-17_13008.txt)

Start by comparing the activeFile context with the complete content returned by the fsRead tool, using the attached toolkit log and the reported 1,046-line C# file as evidence. Reproduce the random truncation after a long chat session and verify that activeFile exposes the complete file or clearly indicates when content is truncated.

Written by the indexing model from the issue text.