iOS 18.4 Update - Bug with Google Calendar Sync (CalDAV)

Hi everyone,

after installing 18.4 I have problems connecting with Google Calendar. I subscribed via CalDAV and half an hour ago, with 18.3, it worked fine. Directly after the update the OS was prompting me to insert my password. Although 100% correct, it's rejected. Even creating a new app password didn't help - rejected as well.

Is this a bug? Does someone else have the same problem? How to fix it?

Or did iOS 18.4 simply discontinue support for CalDAV?

Thanks!