Simple shape tweens disappear
I used Adobe Animate way back when it was still a part of Macromedia. So I'm not a newbee to this software, but I didn't use it for a while and now I downloaded the latest version to teach my son. So we did the very simple tutorial with an apple on a scateboard (from Adobe site). First try was a success. When we tried to repeat the same tutorial, creating the same animation in a separate document our tween shapes started to disappear. I swear - we did everything exactly like it's taught in the tutorial and like we did with the first file! The leaf and the cloud appear on the stage just fine. The timeline shows perfect shape tweening arrows and keyframes. But the leaf and the cloud disappeared from the movie. What is going on?
I was considering a subscription, but now seeing the bugs come in so fast and easy, I'm reconsidering now. Teaching a kid is hard enough. Trying to fix bugs wasn't a part of my plan.
Any help? Suggestions? Guesses?

