about:addons
Temporary Containers > Disable
Try the operation again; this time you’ll get still the wrong container, but at least the URL is in the location bar. Click the Firefox Multi-Account Containers icon in the extensions bar, and choose “Always open this site in …”
Temporary Containers > Enable
Unfortunately, there isn’t a way (at least that I can tell) to edit which websites are to be opened with which containers. The only way to change the map is via the Firefox GUI. This leads to broken behavior.
What I’m saying is that I cannot simply open a file and type in a host.domain combination into the “Always open this site in …” database or policy or JSON or whatever.
For example, I want a particular type of pant clothes hanger. Amazon has a hundred different items with the cheap plastic clip which breaks when I try to hang denim. They have a single item where the clip that supplies the leverage on the clamp is metal. When the fabric is thick, like denim, the plastic clips snap like dry twigs. So I want the old-fashioned metal hangers, only.
But I’m not going to pay Amazon’s stupid price of $7 per clothes hanger. Go kick rocks, you fools.
Okay, so eBay is the answer. I found what I wanted, they came in at $2 each: great! I want to sign in to pay.
Temporary Containers says that’s a nope.
Here’s the deal: I was able to add signup.ebay.com to an assigned container. It was the first site I was on, and the webpage patiently waited for me to sign in, so I could click the “Always open this site in …” menu item.
Similarly, I was able to add www.ebay.com to the same container. But I’d never been able to get to pay.ebay.com added, because to get there, you have to authenticate, first, and then be redirected in. The password login website was in the correct container, but pay.ebay.com was not. And because it was not, it didn’t get the cookies required to prove that I’d typed in my password correctly.
Because I’d never been able to visit pay.ebay.com, I’d never been able to add it to “Always open this site in …”
I can’t get there because it opens in the wrong container. I can’t add it to the right container because I have to get there first. It’s a Catch-22.
To me, the best answer would be for me to be able to edit the list of which host.domain pairs get mapped to which container. It kind of kills me that I can see which domain Firefox is trying to redirect to: pay.ebay.com. I can copy it to the clipboard; where can I paste it in? Ugh: nowhere.
Apparently manual edits are not at all easy, because containers have ID’s, but the policies that move webpages there don’t track the ID’s, or something like that. All I really know is that this has been a problem for a really long time, and the plugin author has said that this is a more difficult problem than one might surmise. I can believe that.
So the answer is to temporarily disable the Temporary Containers plugin, and then do the management of Firefox Multi-Account Containers. Hence, the quick shortcut to get to Firefox extension management.
Anyway, my high quality, old, hangers at $2 each are now on their way. 🙂