Canvas renderer visual bug

[spmonahan]

The canvas renderer displays visual bugs. It looks like the background is not being cleared before a new frame is drawn.

I've created a repro for the issue:

• lottie-player

The issue is also present in react-lottie-player but is not present in lottie-web.

• react-lottie-player
• lottie-web

For the repro cases I've used an animation file from the Lottie site but I first noticed this with a different animation so it seems that it's not the animation file itself.

This is potentially the same issue as: LottieFiles/lottie-react#140