I found a small workaround based off another post.
Even with 4.17, the issue still persists on MAC. And I’m only assuming that Mac is the issue.
But, as a test I set up an animation, 17 frames on a box going from close to open.
Of course in the Level Sequencer when I get to 17 it resets to the first frame pose.
So I used a Set Playback Range node. You only have to know the last frame you want to stop it at, in my case frame 16.
I hope this works for some of you until the issue is fixed.
