Codex Desktop plugin marketplace layout is horizontally clipped on Intel Mac unless --force-device-scale-factor=1 is used

[vensentzhou]

What version of Codex is running?

Codex Desktop App version: 26.506.21252

What platform is your computer?

macOS on Intel Mac (x86_64).

What issue are you seeing?

The Codex Desktop App plugin marketplace page renders incorrectly on my Intel Mac. The plugin list appears horizontally shifted/clipped: most plugin card content is cut off, with large blank/blurred areas and only the right side of plugin rows/buttons visible.

This happens consistently in the Plugins page. The plugin data appears to load, but the layout is miscomputed, so the page is hard to use.

Steps to reproduce

1. Open Codex Desktop App on an Intel Mac.
2. Go to the Plugins page.
3. Observe that plugin cards/list items are horizontally clipped or shifted, so only partial text/buttons are visible.

Expected behavior

The plugin marketplace/list should render normally, with plugin names, descriptions, and install/manage buttons visible and aligned.

Actual behavior

The list is horizontally offset/clipped. Only parts of the plugin rows are visible, and large blank/blurred areas cover the main list area.

Workaround found

Launching Codex with a forced device scale factor fixes the layout:

open -na /Applications/Codex.app --args --force-device-scale-factor=1

Direct launch also works:

/Applications/Codex.app/Contents/MacOS/Codex --force-device-scale-factor=1

Using the normal Dock/Finder launch reproduces the broken layout again.

Things already tried

• Reset app zoom with Cmd+0
• Refresh/relaunch Codex
• Restart the app
• Remove/rebuild main app caches under ~/Library/Application Support/Codex/
• Remove/rebuild the Partitions/codex-browser-app cache, code cache, GPU cache, session storage, local storage, shared storage, and blob storage
• Remove an older /Applications/Codex-intel.app install so only /Applications/Codex.app remains

None of those fixed it. Only --force-device-scale-factor=1 fixes the display.

Additional context

This looks like an Electron/Chromium HiDPI scaling or compositor/layout issue on Intel Mac. There are existing Intel Mac rendering-related issues such as #18341, but this one affects the Plugins marketplace/list page specifically.

I can provide screenshots if needed.

[github-actions]

Potential duplicates detected. Please review them and close your issue if it is a duplicate.

• UI rendering bug where a large dark translucent overlay/shadow is blocking the Codex plugins page #21859
• UI rendering corruption at certain responsive widths on macOS #21780
• Codex Desktop plugin page renders persistent blank overlay / broken layout on Intel macOS #20848
• Plugins and Skills pages render blurred/unreadable in Codex desktop #20274
• Codex Desktop plugin/skills page is covered by a white overlay on Intel macOS 26.2 #20550

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[stareone666-ctrl]

I can confirm this workaround fixes the Plugins page clipping on another affected Intel Mac.

Environment:

• Codex Desktop release observed locally: codex@26.506.21252
• macOS 13.7.8 (22H730)
• Architecture: x86_64
• GPU: Intel Iris Plus Graphics 650
• UI language: Chinese

Result:

• open -a "Codex" --args --force_high_performance_gpu did not fix the issue on this machine.
• Clearing render caches did not fix it.
• Removing AppleTextDirection did not fix it.
• Launching with this command did fix the wide-window Plugins page clipping:

open -na /Applications/Codex.app --args --force-device-scale-factor=1

Side effect:

• The UI becomes visibly less sharp / lower clarity after forcing the device scale factor. The workaround is usable, but it trades rendering correctness for reduced visual crispness.

[LavalLi]

I can still reproduce this on a newer Codex Desktop build.

Environment:

• Codex Desktop: 26.506.31421 (build 2620)
• macOS: 15.7.5 (24G624)
• Platform: Darwin 24.6.0 x86_64 i386
• Machine: Intel Mac
• GPU: Intel UHD Graphics 630 + AMD Radeon Pro 5500M
• Display: built-in display, no external monitor
• UI language: Chinese

Behavior:

• On the Plugins page, making the Codex window fullscreen or manually resizing it wider causes a large opaque/dark block to appear across the middle of the page and cover the plugin content.
• Manually resizing the same window narrower makes the Plugins page render normally again.
• I have observed this for at least two weeks, and it has persisted through at least two Codex app updates.

I have not yet tested --force-device-scale-factor=1 on this machine, but the symptom matches this issue closely. Screenshot of the wide/fullscreen broken state:

[stareone666-ctrl]

Additional data point: changing the macOS display resolution/scaling also resolves the Plugins page clipping on the same affected Intel Mac.

Current observed desktop bounds after changing display settings:

0, 0, 2048, 1280

This further supports that the bug is tied to effective device scale factor / HiDPI scaling / viewport measurement rather than plugin data or cache state. The previously confirmed workaround remains:

open -na /Applications/Codex.app --args --force-device-scale-factor=1

But adjusting the system display resolution/scaling can also make the normal Codex UI render correctly without needing that launch flag.