With the changed behavior tests are failing, so we need to fix this test: https://github.com/jurakp/jboss-eap/blob/6.4.x/testsuite/integration/basic/src/test/java/org/jboss/as/test/integration/jaxrs/gzip/BasicGZIPTestCase.java
Verified with EAP 6.4.14.CP.CR1
Released with EAP 6.4.14 on March 14 (ZIPs) and March 22 (RPMs).