Animations and Montages automatically play when editor opens

When Unreal Engine opens, any open Animation and Montage tabs start to play. This is an issue for several reasons:

  • Editor resources are being used for something you did not consent to/is not being used/is hidden.
  • Any sound in these assets starts playing, making it distracting/frustrating to start up the editor (which is something you need to do quite frequently).
  • You have to hunt down what is playing and turn it off every single time the editor opens.

Steps to reproduce

  1. Open Unreal Engine.
  2. Open tabs from the previous session or open an Animation or Montage asset.

Desired result
Animations and Montages should not automatically play or there should be a setting to turn this behavior off.