I think I know why this is happening. When I created the shape change animation in AE, I exported creating a .png sequence, then imported the images into AE and created a lottie using Bodymovin’. In the settings under Assets, I selected “Include in json”, which is how I was taught how to do all that.
I just found out that because I was rendering the lottie in Weblfow as “SVG”, it would play back flickered. SVG doesn’t like image-based lotties (maybe one day somebody could fix that).
Setting the lottie render to “Canvas” instead worked! But now you have to enter in some javascript to be able to resize to get 100vw (which is what I needed).
Fortunately, I found out this can be done:
Hope this helps someone in the future.