uiLoading & uiScanning white bg in threejs

[dogzilla]

I'm moving from AFrame to Threejs for greater flexibility. Not having a problem porting most things, but my ui overlays that worked fine in AFrame are showing a white bg that blocks everything else no matter what I do. Any suggestions?

[dogzilla]

Found a workaround: adding a "position" parameter to the css of the parent ui element seems to address this - seems like either relative or absolute works.

Still seems like a bug to me, but at least it has a simple solution