I've started a Playgrounds in XCode 9.2 and for some reason autocomplete doesn't work properly, it suggests generic stuff unrelated to what I actually need, for example, if I want to do a super.init it suggests other words in the file that have 's' in them and 'switch', wich actually completes a switch stub. No matter what module I import, it never finds it's classes or methods. Can anyone help or is it a problem only Apple can solve in a future update?