About mouse picking issues in vr mode

Hi，
Recently I found that after using vr mode, the mouse could not be picked up correctly.
In the example https://cesiumjs.org/Cesium/Build/Apps/Sandcastle/?src=3D%20Tiles%20BIM.html, after adding vrButton, enabling vr and picking will not pick up the tileset.
Why is this happening?

Start with the linked Sandcastle “3D Tiles BIM” example and reproduce the issue by adding vrButton, entering VR mode, and attempting to pick the tileset. Trace the mouse-picking path used in VR and determine why the tileset is missed; done means picking works correctly in that example while VR mode is enabled.

Written by the indexing model from the issue text.