In this case i will suggest you to using JKreativ Image Slider and you will get the same result but you will need to insert your image one by one instead. For more detail about it, you can visit our documentation right here http://support.jegtheme.com/documentation/visual-composer/ and jump into JKreativ – Image Slider section.
About these issue, actually i’m not quite sure on this thing, it seems some error that occurs on browser console may causing these issues.
About the problem on the mobile devices, can you tell me more detail about it. Also, it would be better if you can provide me a screenshot, so i can easily to understand.