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property-changed not sent from data binding #5669
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should _setPendingProperty be called with 3d parameter true? polymer/lib/mixins/property-effects.js Line 820 in 8bd4b6e
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Description
a polymer element fires a -changed event when a property is declared with notify: true and is "observably changed". However, when the property is changed from a data binding, the event is not fired.
This is very surprising, it is not understandable why a property change should behave differently, depending on the way it gets invoked.
Live Demo
https://jsbin.com/fiqisay/edit?html,output
Steps to Reproduce
run the example in jsbin
Expected Results
both child properties should notify
Actual Results
the property updated by the binding doesn't
Browsers Affected
Versions
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