Firefox select menu truncation - Rails or JQuery issue?

I have a Rails 4.1 app which has a “Region” select menu generated from a
partial and which displays fine. Based on which option is selected from
this menu I have a JQuery script which takes data from a “locations”
var/object and constructs a secondary “Location” select menu. Everything
works fine in Chrome and Safari but in the latest Firefox/Mac the
secondary menu is limited to the first 20 items. WAT?? Could this be a
Rails issue or an obscure Firefox bug?



Birth Place <%= render
‘birth_region’, {person: 1} %>


<% regions = %w(Africa America Antarctica Arctic Asia Atlantic Australia
Brazil Canada Chile Europe Indian Mexico Pacific US Other) %>

– Select Region

<% regions.each do |region| %>
<%= region %>
<% end %>


var locations = {

… },


$(function() {
$(‘select#region1’).change(function() {
var selection = $(this).val();
var menu = ‘– Nearest Location –’;
var reg = locations[selection];
for (var key in reg) {
menu += ‘’ + reg[key] +
menu += ‘’;

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