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[Bug]: Built-in PDF viewer resets to page 1 whenever the assistant responds #23632
Description
Before submitting
- I searched existing issues and did not find a matching PDF reading-position report.
- I included the reported steps and behavior to help investigate the problem.
Area
Not sure — T3 Code's built-in PDF viewer/preview.
Steps to reproduce
From the reporter's description; not independently reproduced:
- Open a multi-page PDF in T3 Code's built-in viewer.
- Navigate or scroll to a later page.
- Keep the PDF open while the assistant responds.
- Observe the PDF's reading position after the response.
Expected behavior
The PDF viewer preserves the current page and scroll position across assistant responses.
Actual behavior
Whenever the assistant responds, the PDF content appears to reload and jumps back to page 1. The reader has to manually navigate back to the previous reading position every time.
Reported to happen on every assistant response. The exact timing during streaming versus response completion has not been established.
Impact
Major degradation or frequent failure: repeatedly loses the reader's place and interrupts reading a PDF alongside the conversation.
Version or commit
Not provided.
Environment
T3 Code's built-in PDF viewer. OS, client type, and client/server versions were not provided.
Workaround
Manually navigate back to the previous position after each assistant response.
Related
#23089 describes a similar loss of playback position for paused videos after agent commands. This report concerns PDF page/scroll position after assistant replies; a shared cause has not been confirmed.
Drafted with GPT-6.1-Sol through Codex in T3 Code from the user's report.
Activity
spnotold commentedon Oct 24, 2026
Additional reported trigger: switching to another conversation and back also resets the built-in PDF viewer to page 1.
Steps to reproduce
From the user's report; not independently reproduced:
Actual behavior: The PDF automatically returns to page 1. The user reports this happens whenever they switch away and return.
Expected behavior: Returning to the conversation restores the PDF's previous page and scroll position, allowing the user to continue reading where they left off.
This adds a conversation-switching repro to the assistant-response trigger described above. Whether the two triggers share an underlying cause has not been confirmed.