Campaigns trigger Actions according to Contacts Preferred Timezone => wanted as Default Timezone

Your software
My Mautic version is: 4.4.10
My PHP version is: 7.4.33
My Database type and version is: 10.11.4-MariaDB-1~deb12u1

Your problem

=> Actions inside Campaigns are triggered according the Contact Preferred Timezone (if set)

=> I want to be according to Owner Timezone.

=> Wired is that this happen only on one Mautic instance, but on the other 3 it is working ok => the campaigns are triggering the actions according to the Timezone of the Owner / default in Mautic.

These errors are showing in the log:
=> no errors

Steps I have tried to fix the problem:

=> modified the File according to this comment, but without success:

=> created a new campaign that starts for all contacts, that sets the Contact Preferred Timezone as the Owner Timezone.