Notifications are only displayed by Refresh

I just have a filament v3 behavior where I am running out of ideas. Everything is running but the notifications (in page builder) are only displayed after reloading. Everything works locally, only on the server. Does anyone have an idea? The actions otherwise work perfectly, only the notifications only appear after reloading the page. Since it is not a direct code problem, I have put it here.

I don‘t use the database notifications.
Solution
Okay, so the problem is that the RFC allows an empty header but not the WAF and therefore the header "X-Livewire" was not passed through. That was the problem, we are now enforcing this and now it works.
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