I've just updated Xcode to 9.3.1 on High Siera 10.13.4.
When I navigate to Xcode -> Preferences, then select the Components tab, I don't see any Simulators listed there. And there's also no Documentation.
I just fired up an old Mac OS 10.12 VM, where Xcode 8.2.1 is installed and I do see a list of Simulators and Documentation on the Components tab of Xcode -> Preferences.
Anyone else seeing this?Is this a bug in Xcode 9.3.1?