Thank you, @sapana. I noticed the Elementor section as well, but it works fine with the free version of Shutter Up. So when I switch to free with Elementor activated, the problem does not occur. What is different about the Pro version that might cause this?
Also, everything looks fine in the preview while customizing the Shutter Up Pro Theme, so what could be making the unwanted post appear?
I just deactivated Elementor and created a new post. Something is still “off” that makes me suspect a bug with Shutter Up because now it says “From the Blog” above the recent posts feed. This also does not appear in the Free version, and this is with Elementor turned off.
See below. Also note, this is with default home page.