There is currently no way in core to allow editing a term machine name via the admin UI. In Drupal, Taxonomy Machine Name module solves this problem:

Is this something that 80% could use, or does this belong in contrib?
That module claims integration with Views/Token/Pathauto, all of which are in Backdrop core. So does it make sense to have such a feature in core?
GitHub Issue #:
3093
Recent comments
So the implication is that another module is causing the trouble. Now for the slow process of elimination... Sounds plausible. And good luck with digging...
How to troubleshoot interactive image cropping modules?
I’ve just set up a clean install in MAMP and Focal Point works fine. *sighs So the implication is that another module is causing the trouble. Now for the slow process of elimination...
How to troubleshoot interactive image cropping modules?
Here’s the edit screen with the Focal Point instructions below: If I click on the Preview link, I get this: And no errors in the console.
How to troubleshoot interactive image cropping modules?