In query loop, sometimes excerpt from wrong post is displayed

Using Query Loop on homepage, filtered by category Announcement (see?https://i.imgur.com/rtdNxAu.png), the excerpt shown is from a post with a different category.

This is Inspiro Blocks theme (full site editing).

See?https://staging.steeplechasers.org/,?https://i.imgur.com/Uyqu1fT.png?and look at?https://staging.steeplechasers.org/category/announcement/?and?https://staging.steeplechasers.org/category/intervals-blog/?to see which entries are mixed together.

If you need a temp login to debug this, is there a way for me to get that to you securely?

The page I need help with: [log in to see the link]