My Field Group position can't move from the sidebar

The same thing is happening to a few of my installs as well. Feels like a permissions or Admin caching issue, but I don’t know enough about that to troubleshoot.

I don’t have any caching plugins installed (it’s on two staging sites).

After looking into this further, I found mention at the ACF site that when you use the “drag and drop” ordering in the WP admin to reorder, that interferes with ACF’s sort values somehow. Try manually dragging & dropping it from the sidebar to the main content area. I did that, and it fixed the problem. I was able to log in on another machine and the new positioning stuck.

Here’s the post I found:

In my case, simply dragging the box over seemed to solve the problem! Perhaps it will work for you?