I work on Phabricator.
Tue, Feb 9
I suspect you're seeing that because when you reload a page by issuing a "Reload" command in your browser, most (all?) modern browsers interpret that to mean "Reload the page, skipping some/most/all caches". That is, the cache behavior of these sequences differs:
Eventually Phabricator ran out of local sockets (30k limit):
We need an easy way to tell logged-out traffic apart in our caching layer.
Dec 7 2020
I'm happy to take a look at this if someone with access has a chance to figure out where it isn't working on your end -- my expectation is that it's supposed to work, but I could definitely have overlooked something.