Oh my God! Thank you!
I was loosing my mind over this.
BTW, on a separate note, when I tried to migrate my map into a UE5 project with the VR template, the engine complained (with the red message on the top left of the screen) about too many movable lights touching, and it said “shadow casting disabled”.
So the entire scene looks almost like viewing with “Until” mode.
I deleted all the lights it had listed, but no result. I noticed if I set the skylight to static it fixes the shadow issue, but then everything will look extremely dark.
So my question is, do you know how to enable shadow casting again?
I checked everything in world setting, project setting, all the lights and static meshes in the scene, and cast shadow is on for all of them.