Shadow disappears when its source is behind the edge of the screen.

Issue description

Ground squares are losing their shadow when parts of a mountain that generate it are hidden behind the edge of the screen.

Playing in geforce now with high graphics preset on rtx4080.

Reproduction steps

1. Dig a deep mine in a side of a mountain (or use the attached save file, find the coal mine not far from start)
2. Zoom in and rotate camere until you see ground squares losing shadow.

Game version and build number

v0.7.5 (b452)

Operating system

GeForce NOW

Attachments

Zipped save file: Save 2025-06-11, 13-29-45.save