Request header field Accept is not allowed by Access-Control-Allow-Headers. https://api.github.com/graphql

[mjbvz]

Version: 1.66.0-insider
Commit: c5dece632b4b1ea98db872e1edcfc92994503274
User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Safari/605.1.15
Embedder: vscode.dev

1. On insiders.vscode.dev using Safari
2. Log in to GitHub
3. Open a remote repository
4. Try expanding a PR in that repo

Bug
Nothing happens

In the dev tools, I see:

[Error] Failed to load resource: the server responded with a status of 404 () (WorkspaceSnapshot, line 0)
[Error] Request header field Accept is not allowed by Access-Control-Allow-Headers.
[Error] Failed to load resource: Request header field Accept is not allowed by Access-Control-Allow-Headers. (graphql, line 0)
[Error] Request header field Accept is not allowed by Access-Control-Allow-Headers.
[Error] Failed to load resource: Request header field Accept is not allowed by Access-Control-Allow-Headers. (graphql, line 0)
[Error] Request header field Accept is not allowed by Access-Control-Allow-Headers.
[Error] Failed to load resource: Request header field Accept is not allowed by Access-Control-Allow-Headers. (graphql, line 0)

[alexr00]

Duplicate of #3430