XF 1.4 Every click action needs a secondary refresh to work

This just popped up out of the blue tonight, it seems that every action, such as clicking a forum list needs a refresh to work

We have removed all add ons and reverted to the default style, there are no errors whatsoever

here are 2 ways to reproduce the issue, this happens for all users

- click on forum
- create new thread
- click on the current forum name in top nav
- new thread is not there in the list of threads
- hit refresh in browser and now thread displays in the list

- start conversation with someone
- they reply
- you get pm alert and click it
- conversation only has the original message
- hit refresh in browser, reply appears

but this pattern happens everywhere for everyone.
notifications are getting stuck pointing to old messages as well

we had to take the site down over this

Jake Bunce

XenForo moderator
Staff member
Several customers are reporting similar problems this evening. All appear to be nginx servers with Hostgator. Please contact Hostgator about this. These are the response headers that I have observed:

Content-Type:text/html; charset=UTF-8
Date:Thu, 13 Nov 2014 06:54:45 GMT
Expires:Fri, 14 Nov 2014 06:54:45 GMT
Last-Modified:Thu, 13 Nov 2014 06:54:45 GMT
This is generated by a PHP resource which should not be cached.
for anyone else suffering from this hostgator change I fixed this by adding this to .htaccess

<IfModule mod_headers.c>
Header set Cache-Control "no-cache, no-store, must-revalidate"
Header set Pragma "no-cache"
Header set Expires 0