Slides Shifting Right

I added a new slideshow to a page and each slide shifts further right as they transition. When it gets back to the first slide its in the right position again.

There are also 2 large black dots, one over the other at the bottom left of the slides.

Any ideas on how to fix both these issues?

https://wordpress.org/plugins/ml-slider/