Thanks for keeping in touch with us, I hope you’re doing well today.
Could you please try disabling your plugins to see if the issue lies within a plugin?
Also, in Slider Options, could you please ensure that only Bootstrap Slider is selected? This is probably not an issue at all but you may have the Bootstrap Slider selected and then a Theme4Press slider selected below which could potentially cause some mishaps.
Something else you may want to consider is using the Theme4Press slider. This, from my end, is working perfectly, plus it looks quite awesome from where I sit.
I hope this helps,