In todays Game one of my Players asked "what shadow?" when i told her about the spots of light and shadow in the room. We were totally confused, until we exchanged Screenshots...
This is how the Room was set up. Blue is Dim-Light
Now this is how she was seeing the Map:
The Field of View was working just fine, but Dynamic Ligthing with Shadows and all that did not.
Then we tried other Browser. Chrome, Edge, Brave, Opera...not one of them worked. So far only Firefox showed the correct Image.
We tried checking WebGL, Hardware Acceleration, even different rendering Engines. Nope. Nothing worked.
EDIT: I also tested with a Dummy Account. Thats not working either.