There is a bug in your code where a vertical line is displaying when the slides change. It is only evident on large monitor - full screen. (see attachment).
The version we are using is: md_slider-7.x-2.19.
Here is a screenshot of the defect:
There are mulitple people reporting this same issue in the forums.
It looks like you're been able to help others experiencing this same bug. Unfortunaley, we cannot release this site to our customer with this defect, as it looks very amateur.
I've had to invest a lot of time in an attempt to your bug resolved.
Please assist in resolution. Thank you in advance.