Description:
I am seeing some weird behavior in Code. Specifically,
* only the first Code window works. Additional windows spawn empty except for the menu bar (no status bar, even), and the menu items do not work.
* Terminal does not spawn in the first window.

Glancing at the log messages, I can see:
```
[main 2022-02-21T05:56:44.669Z] Blocked vscode-file request vscode-file://vscode-app/usr/lib/code/out/vs/code/electron-browser/sharedProcess/sharedProcess.html
[main 2022-02-21T05:56:44.702Z] [uncaught exception in main]: Error: SharedProcess: failed to load (detail: ERR_BLOCKED_BY_CLIENT, code: -20)
[main 2022-02-21T05:56:44.702Z] Error: SharedProcess: failed to load (detail: ERR_BLOCKED_BY_CLIENT, code: -20)
at /usr/lib/code/out/vs/code/electron-main/main.js:75:73593
at S.fire (/usr/lib/code/out/vs/code/electron-main/main.js:16:1712)
at /usr/lib/code/out/vs/code/electron-main/main.js:14:53994
at S.fire (/usr/lib/code/out/vs/code/electron-main/main.js:16:1712)
at Object.<anonymous> (/usr/lib/code/out/vs/code/electron-main/main.js:74:7589)
at Object.emit (events.js:327:22)
(node:237479) electron: Failed to load URL: vscode-file://vscode-app/usr/lib/code/out/vs/code/electron-browser/sharedProcess/sharedProcess.html with error: ERR_BLOCKED_BY_CLIENT
(Use `electron --trace-warnings ...` to show where the warning was created)
[main 2022-02-21T05:56:52.281Z] Blocked vscode-file request vscode-file://vscode-app/usr/lib/code/out/vs/code/electron-browser/workbench/workbench.html
[main 2022-02-21T05:56:52.309Z] CodeWindow: failed to load (reason: ERR_BLOCKED_BY_CLIENT, code: -20)
(node:237479) electron: Failed to load URL: vscode-file://vscode-app/usr/lib/code/out/vs/code/electron-browser/workbench/workbench.html with error: ERR_BLOCKED_BY_CLIENT
```

I've run Code with `--user-data-dir` and `--extensions-dir` set to empty directories to confirm that this wasn't a config/extension issue.


Additional info:
* package version(s) code-1.64.2-1, code-1.64.1-1, code-1.64.0-1 (1.63 not affected)

Steps to reproduce:
* run code

I can't imagine that everyone else is having this issue, but I can't find a way to get it to run correctly.

Seems specific to 1.64, since downgrading to 1.63 or lower seems to fix this for me (though those versions are all currently affected by upstream [bug #142259](https://github.com/microsoft/vscode/issues/142259) for me). For reference, my last full system upgrade timestamp is `2022-02-21T00:15:27-0000`.