Windows: floating pop-out window keeps growing wider while being dragged

Open 💬 0 comments Opened Jun 18, 2026 by stelvetica

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

26.611.8604.0

What subscription do you have?

Not specified (unrelated to this bug)

What platform is your computer?

Microsoft Windows 11 Home (Chinese), build 10.0.26200, x64

What issue are you seeing?

When using the floating pop-out window feature on the Windows desktop app, the pop-out window keeps growing wider while it is being dragged/moved around the screen. Its width increases continuously during the move instead of staying constant, and it does not return to the original width after the drag is released.

What steps can reproduce the bug?

  1. Open the Codex Windows desktop app.
  2. Pop out a conversation thread into the floating pop-out window.
  3. Drag the floating pop-out window by its title bar to move it around the screen.
  4. While dragging, observe that the window's width keeps increasing / growing wider.

What is the expected behavior?

The floating pop-out window should retain its original width while being moved/dragged. Only its position should change, not its size.

What is the actual behavior?

The floating pop-out window's width increases continuously as it is dragged. The longer/further it is dragged, the wider it becomes, and the width does not snap back to normal after releasing the mouse.

Additional information

  • Codex app version: 26.611.8604.0 (OpenAI.Codex Appx package)
  • OS: Windows 11 Home (Chinese), build 10.0.26200
  • Display: 2048x1152, scaling 125% (AppliedDPI 120)
  • This looks like a window-bounds/size recalculation bug triggered during the move/drag operation — the width appears to be re-applied with an accumulating offset on each move event (possibly DPI/scaling related, given the 125% scaling on this machine).

<!-- Failed to upload "PixPin_2026-06-18_10-22-03.mp4" -->

View original on GitHub ↗