==== Outline:
If the cache is purged after a user has initiated text entry in a text box, other users cannot access the site until the user has navigated away from the page.
==== Steps to replicate:
* Log in
* Click in a text entry box (e.g. new comment)
* Stop services (Apache, PHP-FPM, PHD)
* Purge cache with `$SRVROOT/phabricator/bin/cache purge --purge-all`
* Start services
* Attempt to log in with a new browser profile (e.g. incognito/private browsing)
* Fail hard
==== See also:
{Q528}
==== Versions:
arcanist: fad85844314b151994769a461825c90f7400c145
libphutil: 5ac2ca1214890d865bc57fab2715a322fdf02ab6
phabricator: 58ea40ad64536ca73b2b9f0f4889ce83dd3c76d0