JBoss 7.2 on jdk 1.8 does not load deployment.scanner

I'm trying to deploy a compiled and working WAR file on JBoss AS 7.2.0.Final "Janus"

• When I use the JDK 1.7 the deploy is OK. In the logs I see something like that:

19:44:50,191 DEBUG [org.jboss.as.server.deployment.scanner] (ServerService Thread Pool -- 19) Initializing Deployment Scanner Extension

• The same WAR, with same JBoss, on same OS, but on JDK 1.8 does NOT deploy. I do not see in the logs the org.jboss.as.server.deployment.scanner is run.

I guess there is some problems with modules. But I can't find in official JBoss documentation any tips.

Thank in advance for your help.

PS: Cross link to the same question on StackOverflow