@pierrick when you have time, have a perusal here https://en.opensuse.org/Portal:SELinux it could also be worth a bug report.
Edit, Also worth perusing https://documentation.suse.com/sles/15-SP7/html/SLES-all/cha-selinux.html and https://forums.opensuse.org/t/apache2-and-selinux/189791