Xcode 11 beta doesn't coexist with Xcode 10.2.1?

Usually new versions of Xcode coexist with old version. But if I try to switch back and forth between Xcode 11 beta 2 and Xcode 10.2.1, I have to go through the "Install additional required components" dialog every time. This is maddening, to say the least. Is this a bug? Can I work around it somehow?