4.11p1 tessellated materials don't compile or render

Development Rendering
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Branch: binary
Build version: 4.11.0-2810555+++UE4+Release-4.11

Problem 1. Any new or existing material with tessellation enabled from a converted 4.10 project fails to compile with error messages:
MaterialEditorStats:Error: Error [SM5] DepthOnlyVertexShader.usf(140,29): error X3018: invalid subscript ‘EyeIndex’
MaterialEditorStats:Error: Error [SM5] BasePassVertexShader.usf(86,29): error X3018: invalid subscript ‘EyeIndex’

Problem 2. Any new or existing material in a newly created 4.11p1 project fails to render without shader compiler error message:

Steps to reproduce (Problem 2):

  1. Launch 4.11p1
  2. Create a blank BluePrint project with starter content
  3. Edit the M_Chair starter content to enable tessellation and save → no shader error message, but the chair doesn’t render.
  4. Create a new material, give it a visible base color and save, then enable tessellation and save → no shader error messge, but the material preview is blank.
2

Hello joe.real,

I have tested this issue and have verified that this is a bug with 4.11p1. Internally, this issue appear to be fixed.

I have entered bug for this issue. The bug number is UE-24773.

I do not have an ETA for when this will be fixed. Thank you very much for reporting this issue to us.

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I have verified this is fixed as of the latest version of 4.11.