On a second look, the second CSS file that loads in the dev tools, which is .min.css, does not appear in the page source code. Instead, in the source there is only the 1st CSS file (also .min.css, the file that gets the PUSH), and another CSS that is not minified (.css).
By the way, I have added the
header("Link: </wp-content/mmr/5db83f5c-1608113665.min.js>; as=script; rel=preload", false);
as an alternative to JS push. I cannot do the same for the second CSS file because it always changes its name.
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This reply was modified 5 years, 5 months ago by
RobotFX.
Hi Andy,
Is your site behind a CDN or some other sort of caching?
Cloudflare (free), but bypassing the Cloudflare’s cache didn’t solve the issue.
Are you able to provide your site url?
Seems that the Enable Output Buffering fixed it. Cheers.
Ahh thats good. Some other plugin must be outputting content before the header request can be set.