Codex Desktop: DataAnalyticsWidget content disappears at certain panel widths and after expand/maximize

What version of the Codex App are you using (From “About Codex” dialog)?

26.707.9981.0 (Microsoft Store package)

What subscription do you have?

Unknown / not relevant to the rendering issue

What platform is your computer?

Windows 11 Pro 25H2，Build 26200.8655，x64

What issue are you seeing?

A generated DataAnalyticsWidget report intermittently becomes completely blank in the Codex Desktop right-side panel.

The visibility depends on the effective panel width:

• At some side-panel widths, the report body disappears and only the Dataanalyticswidget tab/header remains.
• Dragging the panel divider to a different ratio can make the exact same report appear again.
• Resizing back to the affected ratio makes the content disappear again.
• Clicking the panel Expand/Maximize control can also trigger the blank state.

The report data is not lost: changing the panel width can restore the content without regenerating the report.

The Codex desktop log repeatedly records this renderer error around the affected session:

ResizeObserver loop completed with undelivered notifications.

This strongly suggests a responsive layout / ResizeObserver reflow bug rather than a report-generation or data-loading failure.

What steps can reproduce the bug?

1. Open Codex Desktop on Windows.
2. Open a thread containing a generated DataAnalyticsWidget report.
3. Open the report in the right-side panel.
4. Drag the divider between the conversation and the DataAnalyticsWidget panel.
5. At certain width ratios, observe that the report body becomes completely blank.
6. Continue resizing to another ratio and observe that the same report content reappears.
7. Resize back to the affected ratio and observe the content disappear again.
8. Click the Expand/Maximize control in the upper-right of the panel.
9. Observe that the expanded panel may also remain blank or lose the report content.

What is the expected behavior?

The DataAnalyticsWidget report should remain visible and reflow correctly at every supported panel width, display scale, and expanded/maximized state.

Changing the panel width should not unmount, hide, clip, or cover the report body. Expand/Maximize should change only the layout, not the visibility of the content.

Additional information

This is specific to the DataAnalyticsWidget/report surface in Codex Desktop on Windows.

Related but not duplicate reports:

• #23801: side-chat content disappeared after Expand panel; different component and already closed after a fix.
• #21077: blank content at responsive width/display-scale breakpoints, but on macOS Plugins/Skills pages.
• #22000: content hidden or restored when the main column width changes, but on the new-chat screen.

Local log evidence from the same day includes repeated ResizeObserver loop completed with undelivered notifications errors. The same class of error was present in an earlier 26.707.9564.0 build, and the visual issue is still reproducible on 26.707.9981.0.

Screenshots are intentionally withheld because they contain private workspace information. A redacted reproduction can be provided if maintainers need it.