Expression Language not working on Wildfly

• Type: Bug
• Status: Closed
• Resolution: No Longer Reproducible
• Affects Version/s: 7.0.0 CE GA1, 7.0.1 CE GA2
• Fix Version/s: 7.0.X EE, Master
• Component/s: Environments, Environments > App Servers
• Labels: None
• Fix Priority: 4
• Application Servers:
  Wildfly 10.0

When deploying portlet with EL in JSP, portlet is deployed without errors, but on render throws java.lang.ClassCastException: com.sun.el.ExpressionFactoryImpl cannot be cast to javax.el.ExpressionFactory.

This bug was already reported in issue https://issues.liferay.com/browse/LPS-66766, but closed as "no longer reproductible". I tested project linked in previous issue, newly created project, out application developed on Liferay 6.2 and example found on github https://github.com/vernaillen/liferay7-springmvc-portlet, all with the same exception.

Steps to reproduce:

• Create new maven project from maven spring mvc archetype version 6.2.10.15.
• Update dependencies.
• Deploy to Wildfly.

I tested it on freshly downloaded Liferay 7 GA1 and GA2 Wildfly bundle started with hypersonic db. Portlet is working on Liferay 7 GA2 Tomcat bundle, like mentioned in previous issue.