Object changes color of random part when I move the object

Hello everybody,

I have the following problem:

When I select a layer/object and move it, a part of it changes color. It is the same for all of the frames in that layer bot not for other layers. As soon as I move it, Adobe Animate changes the color of the one random part.

I even tried moving part of the layer/object, and it just seems to happen, when I move a certain part of the Object

In the Menue where you see the Working steps it just shows the moving of the object, not that it had filled in any color.

It just happened today, and never had happened in any other project.

I also never changed any of any settings. I've been using Animate like this for quite some time, and never had trouble with this.

Things I already tried:

Reopen the project

Deinstalling Animate and reinstalling it

Checking if I have the newest version (23.0.2)

I am unable to move that layer/Object now, without it changing color.

Does somebody has a solution for this?

Thanks in advance!