How to reproduce:
1. Create a new project
2. Import "BulletShell.unitypackage" package
3. Drag "BulletShell" (Assets/Particles/Bullet) into the scene
4. Click the Play button for the particles
Expected result: Animation loops times without invisible frames
Actual result: Animation loops with invisible frames (ignoring the Frame over Time upper limit)
Reproducible with - 2018.4.35f1, 2019.4.28f1, 2020.3.11f1, 2021.1.11f1, 2021.2.0a20