Projects with multi-process cooking enabled will not complete packaging. If MPCook is disabled, packaging can be completed. 

Steps to Reproduce
  1. Open the attached project
  2. Cooking project

The project cooking which set CookProcessCount=4 in editor.ini does not complete cooking. If setting CookProcessCount=1, it will complete packaging project.

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ComponentUE - Foundation - Core - Cooker
Affects Versions5.3
Target Fix5.4
Fix Commit28331505
Main Commit28879289
Release Commit28878783
CreatedSep 26, 2023
ResolvedSep 28, 2023
UpdatedNov 4, 2023
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