Delay third party scripts until user interaction

What is your site url, and do you see any reference to fvm minified files when you “view source” in incognito mode (google chrome).

And when you search for fbq( on the same source, did it change from the original (before enabling fvm) in any way?

The way you are explaining means, either FVM is not processing the page at all (no changes, so no delay) or the server (or some other cache plugin) cached the page before FVM could be executed.

Is there any error on the server logs?
Did you change the theme or add other plugins?
From which version did you update FVM?

Wordpress hooks run in order, so if some other code is stopping execution earlier (could be an error, or some ob_start() buffer), FVM may not have the chance to execute.

FVM executes on the template_redirect hook at the last position.

Thanks

edit..
i found out what it was: your firing order made me dig deeper
All on one seo pack was the culprit.

• This reply was modified 2 years, 4 months ago by lear2000.

so both of you are using output buffering and they are competing against yours
they have a flush for this issue, but if i install it all my content doubles

add_filter( ‘aioseo_flush_output_buffer’, ‘__return_false’ );

literally if disable all in one everything works just fine
any other tricks to maybe delay our OB after theres?

• This reply was modified 2 years, 4 months ago by lear2000.

if i set your redirect to 0 it works everytime
https://snipboard.io/G4IVKM.jpg

question is PHP_INT_MAX is a server setting? can it be increased? or set too high?

• This reply was modified 2 years, 4 months ago by lear2000.
• This reply was modified 2 years, 4 months ago by lear2000.

The purpose of the buffer is to capture the page and apply the optimization, hence it starts as late as possible, after the template loads on the (MAX) (latest) hook priority.

If you set it to zero and it works, that means the other plugin hooks somewhere between 0 and PHP_INT_MAX.

PHP_INT_MAX is the highest number possible, depending on your server.
Usually 2147483647 in 32 bit systems and 9223372036854775807 in 64 bit systems.

From a quick search, that plugin resorts to the buffer when the theme does not support overwriting the titles, and there is an option to disable that here:
https://aioseo.com/docs/aioseo_disable_title_rewrites/

You can try or wait until I have some time to investigate this conflict (and meanwhile you can use zero by editing the plugin… but watch out if the update breaks things again)

in previous versions use went negative:
add_action(‘template_redirect’, ‘fvm_start_buffer’, -PHP_INT_MAX);

im sure you know that, but i just logged into a site and noticed…