Play rate track does not work when using CreateLevelSequencePlayer

Regression: YES

Worked: 4.12.5 CL:3039270
Broken: 4.13.1 CL:3142249

Steps to Reproduce
  1. Create a sequence with a play rate track.
  2. Translate a mesh in the map over the entire sequence
  3. Create stepped keys on the the play rate track. Start at 1, then switch to 0.1 halfway through the sequence
  4. In the level blueprint, trigger the sequence with CreateLevelSequencePlayer>Play
  5. PIE

Result: Play Rate track doesn't work
Expected: Mesh translation slows down significantly

  1. Replace the CreateLevelSequencePlayer node with a reference to the level sequence actor, then GetSequencePlayer
  2. PIE

Result: Expected behavior from above

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ComponentAnim - Sequencer
Affects Versions4.134.14
Target Fix4.15
Fix Commit3203900
Main Commit3238204
CreatedOct 13, 2016
ResolvedNov 18, 2016
UpdatedApr 27, 2018