TS 6.7.1 FormAPI setVisible() problem

System

In TS6.7.1 FormsPublisher, if my custom script set an item within a replicant container invisible using setVisible() when the replicant is first added, then I'm not able to make this item visible again. The same code worked fine in TS 6.5. It looks like a bug to me. Here is the javascript. Also see the datacapture.cfg in attachment. I notice that if I put setChildStatus(contactItem, true); instead of setChildStatus(contactItem, false); in addOneHandler(), then the show and hide button works fine. However, we need to hide the detail field first.

function init() {

IWEventRegistry.addItemHandler("/contacts/show_button",
"onCallout", showDetail);
IWEventRegistry.addItemHandler("/contacts/hide_button",
"onCallout", hideDetail);

IWEventRegistry.addItemHandler("/contacts/individual_contact",
"onReplicantAdded", addOneHandler);

hideDetail();
}


function showDetail(item) {
var i = 1;

var contactItem;
while (contactItem = IWDatacapture.getItem("/contacts/individual_contact[" + i + "]")) {
setChildStatus(contactItem, true);
i++;
}
}

function hideDetail(item) {
var i = 1;

var contactItem;
while (contactItem = IWDatacapture.getItem("/contacts/individual_contact[" + i + "]")) {
setChildStatus(contactItem, false);
i++;
}
}

function addOneHandler(contactItem) {
setChildStatus(contactItem, false);
}

function setChildStatus(item, status) {
var child = item.getChildByName("contact_detail");
child.setVisible(status);
}

// Call the initialization routine on load.
IWEventRegistry.addFormHandler("onFormInit", init);