**System Information:**
Operating system: Linux-5.7.0-1-amd64-x86_64-with-debian-bullseye
Graphics card: NA
**Blender Version:**
Broken: 2.90.0 Alpha, branch: master, commit date: 2020-07-18 08:51, hash: `rBfe49e4139cd3`
Worked: NA as this feature was introduced in Blender 2.90.0
**Short description of error:**
When the `Sun Size` parameter of the `Nishita` sky texture is changed to `0`, shading issues start to occur in the "shadows" of objects.
|Expected result|Actual result|
|{F8704126}|{F8704124}|
**Exact steps for others to reproduce the error:**
1. Change the render engine to `Cycles`.
2. To the `World shader` add a sky texture node set to mode `Nishita`.
3. Reduce the `Sun size` parameter to `0`.
4. Create a scene where objects will cast shadows and look at the results from the rendered viewport or final renders (`F12`).
Or
Download the included .blend file and switch to the rendered viewport mode.