UI Bug: White screen when clicking "Server-Eintrag speichern" or "Serverdatei" in v0.16.7

[helbarthel]

Version: MCP Inspector v0.16.7
OS: Windows 10/11
Browser: Microsoft Edge (aktuellste Version)

Steps to reproduce:

1. Start inspector via npx @modelcontextprotocol/inspector --port 6277
2. Enter command and arguments manually (fields are editable and work)
3. Click "Server-Eintrag → Speichern" OR "Serverdatei"
4. UI immediately turns white (blank screen)
5. Refreshing the page resets all fields, saved values are lost

Expected:

• UI should open save dialog or persist values to LocalStorage

Actual:

• Complete white screen, Inspector unusable until reload

Additional context:

• Happens reproducibly on multiple systems (Edge + Chrome)
• Without persistent storage, MCP Inspector is not usable in daily workflow
• Other users on GitHub also report CLI/GUI issues since v0.16.x (e.g. oauth with different oauth server #795, Unable to start mcp-inspector using the command "npx @modelcontextprotocol/inspector" #794)

Would appreciate fix or workaround (e.g. documented JSON config option).

[olaservo]

Hi, does the dev console show any errors when this happens?