Bug with sun?? (PKMN S/V)

[Noctosphere]

Hello world!
I'm currently playing Pokemon Scarlet on ryujinx (with the S/V+ mod) and I have this weird bug with the sun

As you can see upper in the image, the sun is in the sky, and the following image is what my character is looking at

I mean, is it an emulator bug or a bug of the game?
Like... the sun is facing thus cliff, with no obstacle in between, so why is it full shadowed?

It's not annoying, it's just a bug I just discovered and I'd like your thoughts about it
Thanks