Hi Isomorphic,

please see this sample (v11.1p_2018-01-22) in Tahoe and Enterprise. It seems the icons are not correctly positioned after selecting an entry.
Tahoe: No spacing
Enterprise: Too little spacing and not vertically centered.

Code:
var valueMap = {
    "US" : "<b>United States</b>",
    "CH" : "China",
    "JA" : "<b>Japan</b>",
    "IN" : "India",
    "GM" : "Germany",
    "FR" : "France",
    "IT" : "Italy",
    "RS" : "Russia",
    "BR" : "<b>Brazil</b>",
    "CA" : "Canada",
    "MX" : "Mexico",
    "SP" : "Spain"
}

var valueIcons = {
    "US" : "US",
    "CH" : "CH",
    "JA" : "JA",
    "IN" : "IN",
    "GM" : "GM",
    "FR" : "FR",
    "IT" : "IT",
    "RS" : "RS",
    "BR" : "BR",
    "CA" : "CA",
    "MX" : "MX",
    "SP" : "SP"
}

isc.DynamicForm.create({
    ID: "form2",
    width: 620,
    colWidths: [190, "*"],
    isGroup: true,
    groupTitle: "Select / Combo Controls",
    fields : [
    {
        name: "selectItem", title: "Select", hint: "<nobr>A combobox with icons</nobr>",
        editorType: "ComboBoxItem",
        valueMap : valueMap,
        valueIcons : valueIcons,
        imageURLPrefix : "flags/16/",
        imageURLSuffix : ".png"
    }
    ]
});


isc.VStack.create({
    membersMargin: 10,
    members: [ form2]
});
Best regards
Blama