Why are my theme css files caching on sub domain sites

Are you 100% sure there’s no caching like Mod_Pagespeed or a plugin?

I’d have to look at your site’s headers to know for sure.

My sites are on test urls at reccoa.com, test1.reccoa.com, test2.reccoa.com and are all using the same child theme

I have just disabled all my plugins, have 1 post on each site, and my htaccess is at the minimum for the multisite to work:

# BEGIN WordPress
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]

# add a trailing slash to /wp-admin
RewriteRule ^wp-admin$ wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule ^(wp-(content|admin|includes).*) $1 [L]
RewriteRule ^(.*\.php)$ $1 [L]
RewriteRule . index.php [L]
# END WordPress

I haven’t tried making css edits on my sub sites for a while now. Just now I kept deleting the theme css file ad replacig it and my sub sites were working correctly displaying the site with and without the stylesheet, but a few minutes later it stated again with the css file caching on sub sites.

Another thing to note is when I install wordpress for the first time, my host automatically adds a cache plugin, but all settings are set to disable and the actual plugin is also disabled, I also need to set it to enable in my host account section to work probably. In my host account section you have the ability to enable and disable static cache, google page cache, dynamic cache, and mem cache. The static cache was enabled by default when I signed up to my host, but since then all my host caches are set to disable, and that cache plugin was fully disabled before removing that plugin. This is why I still think my host is doing some sort of caching.

siteground.com/tutorials/supercacher/static_cache.htm

My host have confirmed that they are not caching anything because I everything is disabled.

Sometimes it can take hours for the css file to remove (like now, but usually its aprox 10mins) so good time for anyone to test my site

I delete my css file for my custom1 theme, that both reccoa.com and test1.reccoa.com are using.

on reccoa.com if I view page source it says:

<link rel='stylesheet' id='andym-css' href='https://reccoa.com/wp-content/themes/custom1/style.css?ver=2.0.2' type='text/css' media='all' />

If I click this link I get a 404 error, rightly so because it is deleted.

If I view page source on test1.reccoa.com it says:

<link rel='stylesheet' id='andym-css' href='https://test1.reccoa.com/wp-content/themes/custom1/style.css?ver=2.0.2' type='text/css' media='all' />

But if I click that link my whole css file shows, how is this possible when reccoa.com/wp-content/themes/custom1/style.css doesn’t exist? I have to wait 10 mins – hours before I can click that link and get a 404 error (which is when test1.reccoa.com will stop displaying the stylesheet.)

so when I delete my custom1 css file and visit:

https://reccoa.com/wp-content/themes/custom1/style.css?ver=2.0.2
It doesn’t exsist

https://test1.reccoa.com/wp-content/themes/custom1/style.css?ver=2.0.2
exsists for 10 mins – few hours

Totally confused

Resolved – I re contacted my host to investigate further to find out where these css files keep displaying when I delete them, apparently their caching service was still caching some files when I had their cache disabled, I’m now very happy because I’ve been trying to work this out for months.

Good to know that. Because one of my clients is also using siteground and I’m having a similar issue with their caching service. Thanks.

I am having this issue as we speak, hosting @ siteground too. Wonder if the bug is back. Contacted the helpdesk and they are investigating.

I’m also having this issue. SiteGround is saying that they are not caching anything, but it must be on their end. All SuperCachers off, no caching plugins on a clean WP Multisite install. I’ve changed CSS filenames, and the site is still being served the same.