getAsset() can't find widgets that are inside a tab_menu

Using the XML file below the following code always prints three nulls. However, the XML is rendered correctly, the widgets are there, and calling getAsset("settings") for example works. I assume that getAsset() fails when it has to fetch a widget that's within a group.

trace(_ui.getAsset("name", true));
trace(_ui.getAsset("bgColor", true));
trace(_ui.getAsset("gridColor"));

<?xml version="1.0" encoding="utf-8" ?>
<data>
    <include id="global"/>

    <tab_menu id="tabs" center_x="true" center_y="true" width="70%" height="70%">
        <tab id="settings" label="Settings"/>
        <tab id="layers" label="Layers"/>
        <tab id="entities" label="Entities"/>
        <group id="settings">
            <input_text id="name" x="20%" use_def="inputText" text="New Project" />
            <input_text id="bgColor" x="20%" use_def="inputText" text="0x000000" />
            <input_text id="gridColor" x="20%" use_def="inputText" text="0xffffff" />
            <text id="dName" x="10" text="Project Name" />
            <text id="dBgColor" x="10" text="Background color" />
            <text id="dGridColor" x="10" text="Grid color" />

            <align axis="vertical" spacing="10" resize="false">
                <bounds top="10" bottom="25%"/>
                <objects value="dName,dBgColor,dGridColor"/>
                <objects value="name,bgColor,gridColor"/>
            </align>
        </group>
        <group id="layers">
        </group>
        <group id="entities">
            <input_text id="width" x="50%" use_def="inputText" text="16" />
            <input_text id="height" x="50%" use_def="inputText" text="16" />
            <input_text id="limit" x="50%" use_def="inputText" text="-1" />
            <input_text id="color" x="50%" use_def="inputText" text="0xff0000" />
            <text id="dWidth" x="40%" text="Width" />
            <text id="dHeight" x="40%" text="Height" />
            <text id="dLimit" x="40%" text="Limit" />
            <text id="dColor" x="40%" text="Color" />

            <align axis="vertical" spacing="10" resize="false">
                <bounds top="10" bottom="50%"/>
                <objects value="width,height,limit,color"/>
                <objects value="dWidth,dHeight,dLimit,dColor"/>
            </align>
        </group>
    </tab_menu>
</data>

Start with the getAsset() entry point and reproduce the issue using the XML example in this report. Trace lookup behavior for the name, bgColor, and gridColor widgets inside the settings group, then verify that these calls no longer return null while the existing settings lookup still works.