Since WFLY-8815, the class WeldApplication extends ApplicationWrapper. The class "ApplicationWrapper" was created in JSF2.0, so when I try to build JSF1.2 modules (see https://developer.jboss.org/wiki/StepsToAddAnyNewJSFImplementationOrVersionToWildFly) and deploy a JSF1.2 application, I get this error:

java.lang.NoClassDefFoundError: Failed to link org/jboss/as/jsf/injection/weld/WeldApplication (Module "org.jboss.as.jsf-injection:mojarra-1.2_15" from local module loader @3aa9e816 (finder: local module finder @17d99928 (roots: C:\Java\wildfly-11.0.0.Final.gts\modules,C:\Java\wildfly-11.0.0.Final.gts\modules\system\layers\base))): javax/faces/application/ApplicationWrapper

If I change WeldApplication extends to ForwardingApplication and rebuild modules, the application runs OK.