Animation Symbol appears for no reason in "view layer"

Hallo
For some reason when I am modeling the animaiton symbol appears in the view layer. I never added an animation.
When I press ctrl + MMB an scale the objet to my required view the arrow (animation symbol) appears for no reason.
This happens to objects as well.
Does anybody know why this happens and how can I delete all of them at once? Depending on the amount of Objects it takes a quite a long time to delete all of them.
I haven’t found anything (yet) in the “blender file” section.

Thank you very much…
mastart
Capture

Post moved to #support:animation-and-rigging