Okay, I understand. 
I’ve got it too. Having a subcategory named ‘edit’ turns the category link into an edit button.
As a workaround, to delete the glitching edit category I selected it from the dropdown rather than clicking a category link, and that will let you back into its settings to delete.
Nope, that did not work consistently.
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That 's it. But then you must click to “General” again to go to edit
And try to rename to other → It will be alright.
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you need to add an additional edit to the url and then delete the category
/c/edit/edit/general
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That way worked perfectly. 
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