WebXR app doesn't run properly on Pico 4

Hello, I’m working on a project using the WebXR Export registry. I manage to build the project and test it on Oculus Rift browser and it works perfectly fine as intended, the project can even change to AR/VR mode. But when I am testing it on browser in Pico 4, the project does not run properly, so many bugs and can only use in the web version. I have tried running on steamVR and it doesn’t seem to be able to run the project.

May I know what could be the issue on the project, or is it still a work in progress by Pico or something? I am confuse to why I can run it on browser of other device accept to Pico 4. Thanks for taking your time reading this.