System Information
Operating system: Microsoft Windows 10 Pro
Graphics card: Nvidia GeForce GTX 1050
Processor: Intel(R) Core(TM) i5-2500 CPU @ 3.30GHz, 3301 Mhz, 4 Core(s), 4 Logical Processor(s)

Blender Version
Broken: blender-2.91.0-42f6aada98a6-windows64
Broken: 2.90.1
Worked: 2.83.8

Short description of error
When a material's blending mode is set to Alpha Blend, Hashed, or Opaque, and setting the shadow mode to Alpha Clip, the shadow map does not use Alpha Clip and seems to use Alpha Hashed instead. Setting the shadow mode to anything else works fine. None of the parameters do anything, changing the clip threshold does nothing, turning on Backface Culling does nothing, I can't find any way to fix it.

Exact steps for others to reproduce the error

Open blend file
Set mode to rendered view
Notice how the shadows look hashed, even though the shadow mode is clearly set to Alpha Clip.