They are currently doing beta testing of iOS 18. Betas are rarely without some bugs. That is how they test and find bugs. The public betas are never the most recent code with all of the changes that haven’t been fully integrated.Apple should really push back iOS 18 by 3-6 months and take some time to get these features solid.
Why bother even releasing a half-finished iOS 18, just to keep an arbitrary schedule? Is there anyone actually clamouring for features that aren't related to Apple Intelligence?
It’s likely that they will be able to resolve most of the issues in the next two months before the 18.0 release. Most of the AI features will not be released until 18.1 which is usually in October. The more advanced AI features will not be released until later releases of 18 once they are ready.
You’ve got other people posting on hear that it is pathetic that every single feature won’t ship with 18.0. There is no pleasing everyone.