Sticky section issues

Not sure if anyone can help, but I’ve been pulling my hair out all day. I’m working on a website prototype in Figma where one of the sections is sticky which contains 3 blocks of content half way down the page.

It all works as expected until I clip the content on the Services-section frame so everything isn’t visible on the design. Then nothing seems to work correctly at all. I can just about get the 3 blocks to stick, but then the prototype gets locked almost on that section and can’t scroll down or up. 

Yet if I leave the frame uncliped it works perfectly.