multi selection's on-selected-values-changed will not invoked when it changes

[jwu]

I found the source will assigned array directly:

• https://github.com/PolymerElements/iron-selector/blob/master/iron-multi-selectable.html#L106
• https://github.com/PolymerElements/iron-selector/blob/master/iron-multi-selectable.html#L108

and I think use Polymer's array operation: this.push('selectedValues', value), this.splice('selectedValues', i, 1) will solve this problem.

[pe4enushkin]

+1 Because of this problem, binding to selectedValuse also not populate data into my element.

[oddg]

The fix allows proper data population to the binded properties. But it seems to me that observing change on this binded property is still an issue.

[leogr]

:+1: I encountered the same problem. Using Polymer's array operation worked fine in my case.