Steps to Reproduce

1. select any child
2. click Save button

Current Result

the log shows myPojo.child is a proxy object:
Child=bug.ChildPojo_$$_jvst1a6_1@887cf0

Expected Result

myPojo.child should be Child object, not a proxied Child object

Debug Information

• 9.6.5 doesn't have this problem
• this bug causes app dev cannot store their JPA entities (MyPojo) because of proxy objects (Child) is not known in the persistence context
• since 10.0.0, BeanProxyHandler.java call addCache(attr, proxyIfAny) when invoking getter
  related commit https://github.com/zkoss/zk/commit/3837bbfe89ce7359773ec8ba1b992f51dec85cf1#diff-fe8fcc4b4b7f43e93bf600a1f5dcfad9db48e286d94368dcc2b0b98b3aff6c93

Workaround

public class MyPojo {
	@Immutable
	public ChildPojo getChild() {
		return child;
	}