animations with different durations reset each other when scene is playing

Issue description

When adding at least two animations to a scene with different durations, the animation that is completed first also resets the other animation.

Create a scene "happy-scene"
Create an animation "short-animation" with a duration of 500 ms
Create an animation "long-animation" with a duration of 10000 ms
Add both animations to "happy-scene"
Run the scene and start playback of the timeline
See that after "short-animation" is done and restarts, also "long-animation" restarts