Steps to Reproduce

1. Run this example http://zkfiddle.org/sample/1a8f46j/1-ZK-3339-is-not-working-since-8-5-2-1
2. Resize the width of browser window < 600 px

Current Result

No zk log
 

Expected Result

invoked m0 and invoked m1 appeared in zk log

or private methods are not supported
 

Debug Information

A ZK-3911 side effect

https://github.com/zkoss/zk/blob/v8.5.2/zkbind/src/org/zkoss/bind/impl/BinderImpl.java#L345
getMethods() returns all public methods of this class including those declared by the parent classes.
getDeclaredMethods() returns all declared methods in this class including private methods
 

Workaround

Declare the method in public