Center the cycle slideshow

Problem/Motivation

Impossible to center the slideshow

Steps to reproduce

I have used the method:
1 Go to Configure field.
2 No Rewrite Results needed in this case, but Style Settings.
3 Check Customize field HTML
4 Set DIV in HTML element dropdown list.
5 Check Create a CSS class
6 Set CSS class input value to .text-align-center
This is working for all other formats but not for Slideshow
When I do a refresh the image is centered for a short time but on the next image, it is left aligned.

I have also tested the method described here https://www.drupal.org/docs/7/modules/views-slideshow/theming/horizontal... →
and added this in style.css

.views_slideshow_singleframe_slide {
text-align: center;
width: 100% !important;
}

This is not working either.

I am using Bootstrap5 subtheme in Drupal core 10.1.3

I registered this as a bug because it worked to centre this View in all other formats but Slideshow with the first method.

If I missed some settings in Slideshow I apologize and hope someone can help me to do this right.

Thanks