Container has fill color set to 100%, but it acts like it's transparent

Title pretty much says it all. I set a fill color on a pinned container, but when I scrolled I noticed that the container is acting like it’s transparent.

The two text frames and the line are all in one container, and that container has a fill color applied to it. I double checked the percentage, and it’s at 100%, so it shouldn’t be showing anything behind it.

Hi
This one sounds like a corrupted element.
You can try to add another container to the existing one and use it as a background. Or try to create this element from scratch.
If none of this works, could you attach a link to your site?

Huh, I didn’t know that something could become corrupted. Good to know for future reference. I ended up putting each element in their own container, and that seemed to let the background fill in parent container work.