Windows desktop app's sidebar icons vanish, conversations empty, and login button does nothing after logout (browser works fine)

Title: ChatGPT Desktop App v1.2026.133.0 - Login button unresponsive, chats don’t render, browser works normally

Environment

• Windows 10 Pro 22H2 (Build 19045.6466)

• ChatGPT Desktop App: 1.2026.133.0 (Microsoft Store)

• Microsoft Edge WebView2 Runtime installed

Issue After updating to version 1.2026.133.0:

• Login and Sign Up buttons do not respond.

• Existing conversations do not open.

• New prompts can be entered, but no response is rendered.

• Browser version works normally on the same machine.

Troubleshooting already performed

• Uninstalled and reinstalled the app.

• Cleared LocalCache, LocalState, and TempState.

• Verified WebView2 installation.

• Ran sfc /scannow (corrupted files repaired).

• Ran DISM /Online /Cleanup-Image /RestoreHealth successfully.

• Restarted the PC.

• Other desktop applications work normally.

This appears to be a regression specific to ChatGPT Desktop App version 1.2026.133.0.

I can reproduce this issue consistently on Windows 10 Pro 22H2. Browser works normally. SFC and DISM completed successfully, WebView2 is installed, and reinstalling the app did not resolve the issue.