Undesired cropping/white with responsive option

Hi,
First of all thank you for your useful plugin !

I’m not very far from the desired result.
I have a problem with the responsive option in the Lite version. The sliders are slightly cropped when I expanded the browser window and an unwanted white appears under the slider when I reduce the aforementioned window.
I customized a theme itself responsive so I guess it can be a conflict.
Surprising detail : when I press the top left sidebar of my page that triggers a little refreshment that puts everything in its right place!

Here is my website

What do you think of my problem ?
Thank you in advance for your answer.
??

https://www.ads-software.com/plugins/easing-slider/