Action group, Icon doesn't show up for newUI

The icon appears when I use oldUI mode, but not when I use newUI.

MyIconMappings.json

{
  "icons": {
    "expui": {
      "16x16": {
        "logo_dark.svg": "icons/16x16/logo_dark.svg",
        "logo_bright.svg": "icons/16x16/logo_bright.svg"
      }
    }
  }
}

plugin.xml

<actions>
	<group id="com.test.baseGroup"
       class="com.test.MyBaseGroupAction"
       icon="MyIcons.logoBright"
       text="myGroup"
       popup="true"
	>
    	<action …../>
    	<action …../>
    	<add-to-group group-id="EditorPopupMenu3" anchor="last"/>
	</group>
</actions>
<extensions defaultExtensionNs="com.intellij">
		....
        <iconMapper mappingFile="MyIconMappings.json"/>
</extensions>

MyBaseGroupAction.java

public class MyBaseGroupAction extends DefaultActionGroup {
    @Override
    public void update(@NotNull AnActionEvent e) {
        this.refreshEnabledAndVisible(e);
    }

    private void refreshEnabledAndVisible(@NotNull AnActionEvent e) {
        final boolean presentFunc = "true".equals(MyConfig.getProperty("m.enabled"));
        e.getPresentation().setEnabledAndVisible(presentFunc);
    }
}

MyIcons.java

public interface MyIcons {
		/**
         * Logo
         */
        Icon logoBright = IconLoader.getIcon("icons/16x16/logo_bright.svg", MyIcons.class);
}