Directional light clipping through walls/around FPS character

Hello,

I’m experiencing a weird directional light glitch. It happens only in one particular place on the map. Everything has been built using the same way. It’s a bit difficult to describe, so please check out the attached video:

I’m clueless and any tip would be greatly appreciated.

Thank you!

Update:

Issue has been “fixed” by taking an entire dungeon and moving it lower in the environment. Originally, I tried to creating the highest place you can by using landscape sculpt. When it was on the very top of the topology, the issue presented itself. When moved lower, the glitch was gone.