When using something like this in the admin
prepopulated_fields = {'shortname': ('title',), 'slug': ('title',), }
only one of the fields is correctly auto-populated. The reason is that contrib/admin/templates/admin/prepopulated_fields_js.html generates very simple javascript that overwrites the event listener on the source field used for updating the target field:
{% for dependency in field.dependencies %}
document.getElementById("{{ dependency.auto_id }}").onkeyup = function() {
...
This should be replaced by calls to addEvent (from contrib/admin/media/js/core.js):
{% for dependency in field.dependencies %}
addEvent(document.getElementById("{{ dependency.auto_id }}"), "keyup", function() {
...
I cannot create a patch right now but this should be straightforward to fix in one minute for someone with the infrastructure in place.
