A more elegant way would be to undo your changes and modify how thechange listener is added injs/links/links_widget.js.
Line 393 we could remove the listener from the input element itself (that selectize removes on initialization) and put it on the body with a selector that matches our input.

The code would change from this:

$('#linkedset_'+me.id+' :input[name^="attr_'+me.sAttCode+'["]').off('change').on('change', function () {    ...});

to this:

$('body').off('change', '#linkedset_'+me.id+' :input[name^="attr_'+me.sAttCode+'["]')    .on('change', '#linkedset_'+me.id+' :input[name^="attr_'+me.sAttCode+'["]', function () {.....});

I tested it and it seems to work well