Steps to Reproduce

Run fiddles
Using EL with map and 'key' notation
http://zkfiddle.org/sample/rsdu30/4-Zk-load-binding-maps
Using EL with Bean and 'property' notation
http://zkfiddle.org/sample/2mue0i2/1-ZK-load-binding-properties
(results are identical between map + key and bean+property notations)

Click the button to update all 3 beans values, but notify only the 2nd bean (at index 1 of 0..2)

Click the button again after the first update

Current Result

In ZK 8.0.5 +

On first click

In listbox + template
-bean['property'].property: all bindings are fired when only the 2nd one is expected.
-bean.property.property: only the 2nd binding fired
-bean.get('property').property: no bindings are fired

In forEach
-bean['property'].property: all bindings are fired when only the 2nd one is expected.
-bean.property.property: all bindings are fired when only the 2nd one is expected.
-bean.get('property').property: no bindings are fired

In Children binding
-bean['property'].property: all bindings are fired when only the 2nd one is expected.
-bean.property.property: only the 2nd binding fired
-bean.get('property').property: no bindings are fired

Standalone labels
-bean['property'].property: only the 2nd binding fired
-bean.property.property: only the 2nd binding fired
-bean.get('property').property: only the 2nd binding fired

on 2nd click

In listbox + template
-bean['property'].property: no change
-bean.property.property: no change
-bean.get('property').property: all bindings are fired

In forEach
-bean['property'].property: no change
-bean.property.property: no change
-bean.get('property').property: all bindings are fired

In Children binding
-bean['property'].property: no change
-bean.property.property: no change
-bean.get('property').property: all bindings are fired

Standalone labels
-bean['property'].property: no change
-bean.property.property: no change
-bean.get('property').property: no change

Expected Result

Test the same files in ZK 8.0.4.2
Only the bindings referring to the bean targeted by the notify call are updated.
Subsequent notify calls don't have more effects.

Debug Info

https://github.com/zkoss/zk/commit/636f0e508c3cd7b8208f28d0e6c896cb5f20941d

Root Cause

Workaround