Pages loading is slow after upgrade

Hello,

Recently, we have upgraded from xibo-cms version 4.1.2 to 4.2.3.
We have just changed the docker image from 4.1.2 to 4.2.3. We kept all other configuration as before (apache conf, php.ini, settings.php…).
We are using a persistent volume to store library data like fonts and images …

We are facing a slowly loaded pages on each click on a link in the Xibo web Interface! We didn’t experience this before!

The problem comes from the https://xibo.test.local/font/fontcss: it takes about 10 seconds to load at every click !

The content of the link is:

@font-face {
    font-family: 'aileron heavy regular';
    src: url('/fonts/download/9');
}@font-face {
    font-family: 'aileron regular';
    src: url('/fonts/download/10');
}@font-face {
    font-family: 'dancing script regular';
    src: url('/fonts/download/11');
}@font-face {
    font-family: 'linear regular';
    src: url('/fonts/download/12');
}@font-face {
    font-family: 'open sans regular';
    src: url('/fonts/download/13');
}@font-face {
    font-family: 'poppins regular';
    src: url('/fonts/download/14');
}@font-face {
    font-family: 'railway regular';
    src: url('/fonts/download/15');
}@font-face {
    font-family: 'howdy lemon regular';
    src: url('/fonts/download/16');
}

It seems that font-face are generated at every page loading.

We added apache-font caching But the problem persistes.

It seems that those font data are always generated by Xibo and can’t be stored in the cache !

Could you please help ?

many thanks!