EAP 7 does not display custom error page for custom exception type if JSP config is set to development mode

Issue

• We configure a custom error page for a custom exception type in our application's WEB-INF/web.xml:

 <error-page>
 <exception-type>com.redhat.exception.CustomException</exception-type>
 <location>/error.jsp</location>
 </error-page>

• We see that JBoss does not display this page as expected when the JSP config is set to development mode in the undertow subsystem:

<jsp-config development="true"/>