GSAP timeline doesn't get back as 0 when scroll back in GSAP Posted 10 hours ago Hi @AnDinh and welcome to the GreenSock forums! I think the issue stems from something else in your setup. As you can see in this example the end value doesn't cause any issue whatsoever: See the Pen poZZjaP by GreenSock (@GreenSock) on CodePen If you inspect the element the values are the correct ones. This doesn't seem related to GSAP. Unfortunately I know nothing about THREE so I can't help you with that. Hopefully other users with more experience in it can chime in and spot the issue. Sorry I can't be of more assistance. Let us know if you have more questions. Happy Tweening!