Steps to reproduce:

1. Create full clone of existing map
2. Open cloned map and change anything, for example - text label.
3. Click Update button

Result:
Nothing happens. No feedback. No errors. No even page load, when site does something.
Expected:
Update button for cloned map should just work.

ALSO: What is the point of having "Clone" button if it only makes a blank white sheet without any objects ?