Can you please confirm that this only happens on Safari and not on Chrome, Firefox, and other browsers?
Yes, it only happens on Safari as for now.
Can you please specify how often you can see the problem?
It is difficult to specify. It just happens at some time. Is it possible that is happens after some plugins are automatically updated and the caches are nor purged yet?
I will follow what you advised. However, I am afraid I won’t see any changes now, because after I have purged the caches yesterday the problem disappeared. Still, I can make the changes and watch if it breaks again.
