WebBrowserComponent always in front?

in one of my apps on both macos and ios i noticed that a ComboBox menu which overlaps a WebBrowserComponent will be hidden. i checked in the demo runner and there’s also weird behavior there with the WebBrowserDemo - the sidebar doesn’t slide over the demo window but instead resizes it.

this seems to occur in the various OpenGLDemo's as well as the VideoDemo. is this a known issue with components that are actually embedding native widgets or is there some workaround? i’ve tried toBack and toBehind but neither works.