@kkrystian Hi. Right now It is difficult to understand what is the actual issue that you’re experiencing, sorry 
I don’t see anything inherently bad with the animation you shared.
If you want to show us what is “wrong” in the Pencil2D application, please consider taking a screenshot of the actual program to show where the problem is appearing.
Please make sure you take a full window screenshot if possible to have enough information as well.