Just today, the order of my subscribed threads seems to have gone awry. I thought that typically they were ordered by the most recently updated one. But they seem to be kind of random today. For instance, right now I have two subscribed threads that have updates and I'm in Chrome on a laptop. So I click on "Subscriptions" and I see this :
You can see that the "last post" time isn't in any particular order. Previously, the updated threads would rise to the top.
I've tried clearing my cache and cookies, and tried multiple browsers, but neither seems to have changed this. I looked through the settings and don't seem to be able to fix it there either.