Certain particle effects in ContentExamples stop playing when looked at from a specific angle. The affected demos are 2.1, 2.4, 2.5, and 2.7

Seen on an Nvidia MacbookPro and AMD MacPro

Does not occur in OpenGL on mac
Does not occur on Windows.

Steps to Reproduce
  1. Obtain a copy of ContentExamples
  2. Open ContentExamples from the launcher
  3. Open effects map
  4. Play in Standalone game
  5. Navigate to display 2.1 and look at it from directly in front of it

Result: Particles stop moving

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ComponentUE - Platform - Apple
Affects Versions4.13
Target Fix4.14
Fix Commit3112738
Main Commit3120378
CreatedAug 20, 2016
ResolvedSep 2, 2016
UpdatedApr 27, 2018