Intel macOS: persistent blurred overlay in normal launch; --disable-gpu-compositing reveals UI but breaks colors

Device:

• MacBook Pro 16-inch 2019 Intel
• x86_64

Codex:

• Desktop app version: 26.422.30944
• Electron: 41.2.0
• Bundled codex: 0.125.0-alpha.3

Symptoms:

1. Normal launch shows persistent blurred/translucent overlay below composer.
2. The overlay blocks or hides expected home UI.
3. --disable-gpu does not show usable app; process remains alive at 100% CPU.
4. --disable-gpu-compositing reveals the expected UI elements, but composer/input area renders as bright cyan.
5. Plugin page also shows rendering/skeleton/blur artifacts.

Commands tested:

• open -na /Applications/Codex.app
• open -na /Applications/Codex.app --args --disable-gpu
• open -na /Applications/Codex.app --args --disable-gpu-compositing

ps output:

• Codex --disable-gpu process remains alive with high CPU
• Codex --disable-gpu-compositing process also runs