If there's a problem with transparent background, try this https://vrstormlab.com/dancexr/faq#sky-sphere-from-stage-models-look-strange-the...
The hair settings have a new toggle that says "Transparent Prepass", you can also turn it off and see if works better.
You can download the 1.4.1 HD build from here: https://vrstormlab.com/dancexr/download