Fixed background images not fixed

Design help Layout & Design
1

I am wanting to have the case study images fixed. I have them set but they scroll in preview and published site but behave as expected in the designer.

Here is my site Read-Only:

https://preview.webflow.com/preview/usable?utm_medium=preview_link&utm_source=designer&utm_content=usable&preview=3b88377de3f03af3cea1ebac6df2016d&workflow=preview