Can't save multiple files in Safari

Running this code only saves `file2.txt` and not `file1.txt` in Safari (but works both in Chrome ans Firefox):
```js
saveAs(
new Blob(['File one'], { type: 'text/plain;charset=utf-8' }),
'file1.txt'
);
saveAs(
new Blob(['File two'], { type: 'text/plain;charset=utf-8' }),
'file2.txt'
);
```

Is it known/expected or some bug? Works with setTimeout:
```js
saveAs(
new Blob(['File one'], { type: 'text/plain;charset=utf-8' }),
'file1.txt'
);
setTimeout(() => {
saveAs(
new Blob(['File two'], { type: 'text/plain;charset=utf-8' }),
'file2.txt'
);
}, 0);
```

OS: Mac 11.5.2
Safari: Version 15.0 (16612.1.29.41.4, 16612)