Post Thumbnails & Exceprts Not Updating

I am working with a client to switch their site to Enfold on an existing site that I didn’t originally build. All going well so far, except I can’t figure out why the following is (or isn’t) happening:

When I update a blog post, the post thumbnail and excerpt don’t automatically update on the page on which they display. I need to manually update that page on which the blog section is placed, and then the changes show up. The changes do show up on the post itself, but just not in the content areas where I’ve got blog posts set up in a grid.

Similarly, when I update the content in a widget area and click save, those changes don’t automatically update when I refresh the page on which they display. I need to, again, go in and manually update that page on which that sidebar displays to make the changes display.

Any idea what is causing this? Like I mentioned, I didn’t build the original site, and am working from a lot of existing posts and just fine-tuning each one. It appears that the thumbnail and excerpt are automatically updating after changes on category pages, but not pages in which I’ve placed a blog section using the layout builder.