Strange Xcode and autocomplete issue

A few days ago I experienced a strange issue with the Xcode and its autocomplete functionality that ate some 2-3 hours of my time tracing back when and what happened in the commit

MacOS Catalina Beta installation issue

Today, I decided to install the Catalina Beta but after enrolling to the beta program, I encoutered this issue: The requested version of macos is not available The solution I found is to