An example for the bug discussed in https://issues.redhat.com/browse/WELD-2570
To set up the example, import the Maven project into IntelliJ, and set up a run configuration with the SmartTomcat plugin like shown in the image.
Note that there is a potential issue with the setup of the project, since the beans.xml file does not reside in the webapp folder which is used as web root, but in the resources folder. Only the META-INF folder in the resources directory is found by both the DefaultBeanArchiveScanner and the WebappBeanArchiveScanner. Nonetheless, even if the META-INF folder in the resources directory is not best practice, since it is easy to make Weld resilient against it, I would advise for it.
Fix: See weld/core#2003 and weld/core#2004