Bug 1665942 Comment 8 Edit History

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Original comment by
on 
I check the data that FF writes into disk and I got:
```
   {
      "host": "twitter.com",
      "value": "en",
      "path": "/",
      "name": "lang",
      "originAttributes": {
        "firstPartyDomain": "",
        "geckoViewSessionContextId": "",
        "inIsolatedMozBrowser": false,
        "partitionKey": "",
        "privateBrowsingId": 0,
        "userContextId": 1
      },
      "sameSite": 1,
      "schemeMap": 2
    },
    {
      "host": "twitter.com",
      "value": "en",
      "path": "/",
      "name": "lang",
      "originAttributes": {
        "firstPartyDomain": "",
        "geckoViewSessionContextId": "",
        "inIsolatedMozBrowser": false,
        "partitionKey": "",
        "privateBrowsingId": 0,
        "userContextId": 0
      },
      "sameSite": 1,
      "schemeMap": 2
    },
    {
      "host": ".wikipedia.org",
      "value": "DE:BE:Berlin:52.54:13.42:v4",
      "path": "/",
      "name": "GeoIP",
      "secure": true,
      "originAttributes": {
        "firstPartyDomain": "",
        "geckoViewSessionContextId": "",
        "inIsolatedMozBrowser": false,
        "partitionKey": "",
        "privateBrowsingId": 0,
        "userContextId": 2
      },
      "sameSite": 1,
      "schemeMap": 2
    },

    {
      "host": ".wikipedia.org",
      "value": "DE:BE:Berlin:52.54:13.42:v4",
      "path": "/",
      "name": "GeoIP",
      "secure": true,
      "originAttributes": {
        "firstPartyDomain": "",
        "geckoViewSessionContextId": "",
        "inIsolatedMozBrowser": false,
        "partitionKey": "",
        "privateBrowsingId": 0,
        "userContextId": 0
      },
      "sameSite": 1,
      "schemeMap": 2
    },
```

So, it seems that the userContextId is propagated correctly and maybe the issue happens when we restore pages from these data?
Revision 1 by
on 
I check [the data that FF writes into the disk](https://searchfox.org/mozilla-central/rev/b58ca45005fe02077c92779483d1b60e9a49687c/browser/components/sessionstore/SessionWorker.js#164-165) and I got:
```
   {
      "host": "twitter.com",
      "value": "en",
      "path": "/",
      "name": "lang",
      "originAttributes": {
        "firstPartyDomain": "",
        "geckoViewSessionContextId": "",
        "inIsolatedMozBrowser": false,
        "partitionKey": "",
        "privateBrowsingId": 0,
        "userContextId": 1
      },
      "sameSite": 1,
      "schemeMap": 2
    },
    {
      "host": "twitter.com",
      "value": "en",
      "path": "/",
      "name": "lang",
      "originAttributes": {
        "firstPartyDomain": "",
        "geckoViewSessionContextId": "",
        "inIsolatedMozBrowser": false,
        "partitionKey": "",
        "privateBrowsingId": 0,
        "userContextId": 0
      },
      "sameSite": 1,
      "schemeMap": 2
    },
    {
      "host": ".wikipedia.org",
      "value": "DE:BE:Berlin:52.54:13.42:v4",
      "path": "/",
      "name": "GeoIP",
      "secure": true,
      "originAttributes": {
        "firstPartyDomain": "",
        "geckoViewSessionContextId": "",
        "inIsolatedMozBrowser": false,
        "partitionKey": "",
        "privateBrowsingId": 0,
        "userContextId": 2
      },
      "sameSite": 1,
      "schemeMap": 2
    },

    {
      "host": ".wikipedia.org",
      "value": "DE:BE:Berlin:52.54:13.42:v4",
      "path": "/",
      "name": "GeoIP",
      "secure": true,
      "originAttributes": {
        "firstPartyDomain": "",
        "geckoViewSessionContextId": "",
        "inIsolatedMozBrowser": false,
        "partitionKey": "",
        "privateBrowsingId": 0,
        "userContextId": 0
      },
      "sameSite": 1,
      "schemeMap": 2
    },
```

So, it seems that the userContextId is propagated correctly and maybe the issue happens when we restore pages from these data?

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