I have an XCode workspace containing four projects: two frameworks and two applications. The applications use the frameworks. When using a scheme that builds either application, any compile/link errors from the frameworks are not appearing in the Issue Navigator. The build errors only show when using a scheme that builds the relevant framework.
The frameworks and applications contain targets for both Mac OS and iOS.
The workspace was created in XCode 10.1 (and Mojave). An older version of the workspace under XCode 9 showed all errors (it isn't easily available for me to see whether it still works).
A similar configuration in another workspace (at work) reports build errors properly. That workspace is iOS only, and was created with XCode 9 (and the machine still runs High Sierra).
Any suggestions on how to get the errors to show?