Using timeline.tweenTo() is causing a range of maximum stack errors, being showed in the console. I've created a very simplified demo on codepen (see link). This looks like an issue inside version 3 to me as I follow the documentation of v3 and this demo is very reduced to just this and still shows the issue.   (Link to docs: https://greensock.com/docs/v3/GSAP/Timeline/tweenTo())         See the Pen OJVWaPM by Friksel (@Friksel) on CodePen