Add button disappears for subgrid when using addOnLoad

Question

When I'm using the addOnLoad function in Dynamics CRM for my subgrid(incidents) the add button disappears. My addOnLoad event works perfectly and when I click on the delete button for a row in the subgrid the add button appears again.

Obviously there is a event that can be triggered? Since the add button appears when I'm clicking on the delete button. I don't have this problem on other subgrids with relationships to other entities than incidents.

var grid = Xrm.Page.getControl("issues");

if (grid == null) {
    setTimeout(function () { AddEventToGridRefresh(); }, 5000);
    return;
}

grid.addOnLoad(refreshNumberOfIncidents);

--

window.refreshNumberOfIncidents = function () {

Api.getIncidents(globals.getAccountId(), function (result) {

    if (result.success) {

        arrayLength = result.data.value.length;

        Xrm.Page.getControl("WebResource_Interaction").getObject().contentWindow.document.getElementById("incidents").innerHTML = arrayLength;
    }

});

Answer 1

Solved it by delaying a refresh after the addOnLoad call

setTimeout(function () { Xrm.Page.data.refresh(); }, 1000);