Hi Scott and thanks for the report. I believe this was fixed within WELD-2376, that means Weld 3.0.0+ and 2.4.4+; see also https://github.com/weld/core/blob/2.4/probe/core/src/main/java/org/jboss/weld/probe/JsonObjects.java#L1179-L1190. Unfortunately, Thorntail v2 is using Weld 2.4.3.Final because that's the version the WildFly it is based on is using.