Just 4 Fun - Experimenting with Pencil2D V 0.7

[Starter (MarySmith)]

You will notice, if you are observant that the character slides backwards after each step forward. I have posted below

Help! I am having a problem with this animation?

The project file is Walk-6.pclx (61.8 KB) . I know that it is drawn using vector line and fills. But I play this file using the internal player within Pencil2D and I get the results that I expect. [Walk-6] But now look at the expoerted .GIF file running below. Why the difference? Why is the character sliding backwards?