Yes if I add and animate a cube to the sequence it works fine, the sequence itself is looping properly, it’s just the skeletal mesh animation that randomly stops.
I zipped the project and had a friend see if the issue persisted on his machine and it did. Would you be willing to take a look at the project and see if you can reproduce it on your end?
Just press Y in the level and the sequence will spawn and then the looping animation will stop randomly
If not, no worries, I can just submit a bug report, and thanks for taking the time to respond